- Carduelis chloris — likely to require a high donation
- Carduelis citrinella — likely to require a high donation
- Carduelis corsicana — likely to require a high donation
- Carduelis crassirostris — likely to require a high donation
- Carduelis cucullata — likely to require a high donation
- Carduelis dominicensis — likely to require a high donation
- Carduelis flammea — likely to require a high donation
- Carduelis flavirostris — likely to require a high donation
- Carduelis hornemanni — likely to require a high donation
- Carduelis johannis — likely to require a high donation
- Carduelis lawrencei — likely to require a high donation
- Carduelis magellanica — likely to require a high donation
- Carduelis monguilloti — likely to require a high donation
- Carduelis notata — likely to require a high donation
- Carduelis olivacea — likely to require a high donation
- Carduelis pinus — likely to require a high donation
- Carduelis siemiradzkii — likely to require a high donation
- Carduelis sinica — likely to require a high donation
- Carduelis spinescens — likely to require a high donation
- Carduelis spinoides — likely to require a high donation
- Carduelis spinus — likely to require a high donation
- Carduelis tristis — likely to require a high donation
- Carduelis uropygialis — likely to require a high donation
- Carduelis xanthogastra — likely to require a high donation
- Carduelis yarrellii — likely to require a high donation
- Carduelis yemenensis — likely to require a high donation
- Cariama cristata — likely to require a substantial donation
- Caridonax fulgidus — likely to require a high donation
- Carpococcyx renauldi — likely to require a high donation
- Carpococcyx viridis — likely to require a high donation
- Carpodacus cassinii — likely to require a high donation
- Carpodacus edwardsii — likely to require a high donation
- Carpodacus eos — likely to require a high donation
- Carpodacus erythrinus — likely to require a high donation
- Carpodacus nipalensis — likely to require a high donation
- Carpodacus pulcherrimus — likely to require a high donation
- Carpodacus puniceus — likely to require a high donation
- Carpodacus purpureus — likely to require a high donation
- Carpodacus rhodochlamys — likely to require a high donation
- Carpodacus roborowskii — likely to require a high donation
- Carpodacus rodochroa — likely to require a high donation
- Carpodacus rodopeplus — likely to require a high donation
- Carpodacus roseus — likely to require a high donation
- Carpodacus rubescens — likely to require a high donation
- Carpodacus rubicilla — likely to require a high donation
- Carpodacus rubicilloides — likely to require a high donation
- Carpodacus synoicus — likely to require a high donation
- Carpodacus thura — likely to require a high donation
- Carpodacus trifasciatus — likely to require a high donation
- Carpodacus vinaceus — likely to require a high donation
- Carpodectes antoniae — likely to require a high donation
- Carpodectes hopkei — likely to require a high donation
- Carpodectes nitidus — likely to require a high donation
- Carpornis cucullata — likely to require a substantial donation
- Carpornis melanocephala — likely to require a substantial donation
- Caryothraustes canadensis — likely to require a high donation
- Caryothraustes poliogaster — likely to require a high donation
- Casiornis fuscus — likely to require a high donation
- Casiornis rufus — likely to require a high donation
- Casmerodius albus — likely to require a substantial donation
- Casuarius bennetti — likely to require a substantial donation
- Casuarius casuarius — likely to require a substantial donation
- Casuarius unappendiculatus — likely to require a substantial donation
- Catamblyrhynchus diadema — likely to require a high donation
- Catamenia analis — likely to require a high donation
- Catamenia homochroa — likely to require a high donation
- Catamenia inornata — likely to require a high donation
- Cataponera turdoides — likely to require a high donation
- Catharacta antarctica — likely to require a high donation
- Catharacta chilensis — likely to require a high donation
- Catharacta maccormicki — likely to require a substantial donation
- Catharacta skua — likely to require a substantial donation
- Catharopeza bishopi — likely to require a high donation
- Cathartes aura — likely to require a substantial donation
- Cathartes burrovianus — likely to require a substantial donation
- Cathartes melambrotus — likely to require a substantial donation
- Catharus aurantiirostris — likely to require a high donation
- Catharus bicknelli — likely to require a high donation
- Catharus dryas — likely to require a high donation
- Catharus frantzii — likely to require a high donation
- Catharus fuscater — likely to require a high donation
- Catharus fuscescens — likely to require a high donation
- Catharus gracilirostris — likely to require a high donation
- Catharus guttatus — likely to require a high donation
- Catharus mexicanus — likely to require a high donation
- Catharus minimus — likely to require a high donation
- Catharus occidentalis — likely to require a high donation
- Catharus ustulatus — likely to require a high donation
- Catherpes mexicanus — likely to require a high donation
- Catoptrophorus semipalmatus — likely to require a high donation
- Catreus wallichi — likely to require a substantial donation
- Celeus brachyurus — likely to require a high donation
- Celeus castaneus — likely to require a high donation
- Celeus elegans — likely to require a high donation
- Celeus flavescens — likely to require a high donation
- Celeus flavus — likely to require a high donation
- Celeus grammicus — likely to require a high donation
- Celeus loricatus — likely to require a high donation
- Celeus lugubris — likely to require a high donation
- Celeus obrieni — likely to require a high donation
- Celeus spectabilis — likely to require a high donation
- Celeus torquatus — likely to require a high donation
- Celeus undatus — likely to require a high donation
- Centrocercus minimus — likely to require a substantial donation
- Centrocercus urophasianus — likely to require a substantial donation
- Centropus andamanensis — likely to require a high donation
- Centropus anselli — likely to require a high donation
- Centropus ateralbus — likely to require a high donation
- Centropus bengalensis — likely to require a high donation
- Centropus bernsteini — likely to require a high donation
- Centropus celebensis — likely to require a high donation
- Centropus chalybeus — likely to require a high donation
- Centropus chlororhynchus — likely to require a high donation
- Centropus cupreicaudus — likely to require a high donation
- Centropus goliath — likely to require a high donation
- Centropus grillii — likely to require a high donation
- Centropus leucogaster — likely to require a high donation
- Centropus melanops — likely to require a high donation
- Centropus menbeki — likely to require a high donation
- Centropus milo — likely to require a high donation
- Centropus monachus — likely to require a high donation
- Centropus nigrorufus — likely to require a high donation
- Centropus phasianinus — likely to require a high donation
- Centropus rectunguis — likely to require a high donation
- Centropus senegalensis — likely to require a high donation
- Centropus sinensis — likely to require a high donation
- Centropus spilopterus — likely to require a high donation
- Centropus steerii — likely to require a high donation
- Centropus superciliosus — likely to require a high donation
- Centropus toulou — likely to require a high donation
- Centropus unirufus — likely to require a high donation
- Centropus violaceus — likely to require a high donation
- Centropus viridis — likely to require a high donation
- Cephalopterus glabricollis — likely to require a high donation
- Cephalopterus ornatus — likely to require a high donation
- Cephalopterus penduliger — likely to require a high donation
- Cephalopyrus flammiceps — likely to require a high donation
- Cepphus carbo — likely to require a high donation
- Cepphus columba — likely to require a substantial donation
- Cepphus grylle — likely to require a substantial donation
- Ceratogymna atrata — likely to require a high donation
- Ceratogymna elata — likely to require a high donation
- Cercibis oxycerca — likely to require a high donation
- Cercococcyx mechowi — likely to require a high donation
- Cercococcyx montanus — likely to require a high donation
- Cercococcyx olivinus — likely to require a high donation
- Cercomacra brasiliana — likely to require a high donation
- Cercomacra carbonaria — likely to require a high donation
- Cercomacra cinerascens — likely to require a high donation
- Cercomacra ferdinandi — likely to require a high donation
- Cercomacra laeta — likely to require a high donation
- Cercomacra manu — likely to require a high donation
- Cercomacra melanaria — likely to require a high donation
- Cercomacra nigrescens — likely to require a high donation
- Cercomacra nigricans — likely to require a high donation
- Cercomacra parkeri — likely to require a high donation
- Cercomacra serva — likely to require a high donation
- Cercomacra tyrannina — likely to require a high donation
- Cercomela dubia — likely to require a high donation
- Cercomela familiaris — likely to require a high donation
- Cercomela fusca — likely to require a high donation
- Cercomela melanura — likely to require a high donation
- Cercomela schlegelii — likely to require a high donation
- Cercomela scotocerca — likely to require a high donation
- Cercomela sinuata — likely to require a high donation
- Cercomela sordida — likely to require a high donation
- Cercomela tractrac — likely to require a high donation
- Cercotrichas podobe — likely to require a high donation
- Cereopsis novaehollandiae — likely to require a substantial donation
- Cerorhinca monocerata — likely to require a substantial donation
- Certhia americana — likely to require a high donation
- Certhia brachydactyla — likely to require a high donation
- Certhia discolor — likely to require a high donation
- Certhia familiaris — likely to require a high donation
- Certhia himalayana — likely to require a high donation
- Certhia hodgsoni — likely to require a high donation
- Certhia manipurensis — likely to require a high donation
- Certhia nipalensis — likely to require a high donation
- Certhia tianquanensis — likely to require a high donation
- Certhiaxis cinnamomeus — likely to require a high donation
- Certhiaxis mustelinus — likely to require a high donation
- Certhidea fusca — likely to require a high donation
- Certhidea olivacea — likely to require a high donation
- Certhilauda albescens — likely to require a high donation
- Certhilauda barlowi — likely to require a high donation
- Certhilauda burra — likely to require a high donation
- Certhilauda chuana — likely to require a high donation
- Certhilauda curvirostris — likely to require a high donation
- Certhilauda erythrochlamys — likely to require a high donation
- Certhilauda semitorquata — likely to require a high donation
- Certhilauda subcoronata — likely to require a high donation
- Certhionyx niger — likely to require a high donation
- Certhionyx pectoralis — likely to require a high donation
- Certhionyx variegatus — likely to require a high donation
- Ceryle rudis — likely to require a high donation
- Cettia acanthizoides — likely to require a high donation
- Cettia annae — likely to require a high donation
- Cettia brunnescens — likely to require a high donation
- Cettia brunnifrons — likely to require a high donation
- Cettia carolinae — likely to require a high donation
- Cettia cetti — likely to require a high donation
- Cettia diphone — likely to require a high donation
- Cettia flavolivacea — likely to require a high donation
- Cettia fortipes — likely to require a high donation
- Cettia haddeni — likely to require a high donation
- Cettia major — likely to require a high donation
- Cettia pallidipes — likely to require a high donation
- Cettia parens — likely to require a high donation
- Cettia ruficapilla — likely to require a high donation
- Cettia seebohmi — likely to require a high donation
- Cettia vulcania — likely to require a high donation
- Ceuthmochares aereus — likely to require a high donation
- Ceyx erithaca — likely to require a high donation
- Ceyx fallax — likely to require a high donation
- Ceyx lecontei — likely to require a high donation
- Ceyx lepidus — likely to require a high donation
- Ceyx madagascariensis — likely to require a high donation
- Ceyx melanurus — likely to require a high donation
- Ceyx pictus — likely to require a high donation
- Ceyx rufidorsa — likely to require a high donation
- Chaetocercus astreans — likely to require a substantial donation
- Chaetocercus berlepschi — likely to require a substantial donation
- Chaetocercus bombus — likely to require a substantial donation
- Chaetocercus heliodor — likely to require a substantial donation
- Chaetocercus jourdanii — likely to require a substantial donation
- Chaetocercus mulsant — likely to require a substantial donation
- Chaetops aurantius — likely to require a substantial donation
- Chaetops frenatus — likely to require a substantial donation
- Chaetorhynchus papuensis — likely to require a high donation
- Chaetornis striata — likely to require a high donation
- Chaetura brachyura — likely to require a high donation
- Chaetura chapmani — likely to require a high donation
- Chaetura cinereiventris — likely to require a high donation
- Chaetura egregia — likely to require a high donation
- Chaetura fumosa — likely to require a high donation
- Chaetura martinica — likely to require a high donation
- Chaetura meridionalis — likely to require a high donation
- Chaetura pelagica — likely to require a high donation
- Chaetura spinicaudus — likely to require a high donation
- Chaetura vauxi — likely to require a high donation
- Chaetura viridipennis — likely to require a high donation
- Chaimarrornis leucocephalus — likely to require a high donation
- Chalcophaps indica — likely to require a high donation
- Chalcophaps stephani — likely to require a high donation
- Chalcopsitta atra — likely to require a substantial donation
- Chalcopsitta cardinalis — likely to require a substantial donation
- Chalcopsitta duivenbodei — likely to require a high donation
- Chalcopsitta sintillata — likely to require a high donation
- Chalcostigma herrani — likely to require a substantial donation
- Chalcostigma heteropogon — likely to require a substantial donation
- Chalcostigma olivaceum — likely to require a substantial donation
- Chalcostigma ruficeps — likely to require a substantial donation
- Chalcostigma stanleyi — likely to require a substantial donation
- Chalybura buffonii — likely to require a substantial donation
- Chalybura urochrysia — likely to require a substantial donation
- Chamaea fasciata — likely to require a high donation
- Chamaepetes goudotii — likely to require a substantial donation
- Chamaepetes unicolor — likely to require a substantial donation
- Chamaeza campanisona — likely to require a high donation
- Chamaeza meruloides — likely to require a high donation
- Chamaeza mollissima — likely to require a high donation
- Chamaeza nobilis — likely to require a high donation
- Chamaeza ruficauda — likely to require a substantial donation
- Chamaeza turdina — likely to require a substantial donation
- Charadrius alexandrinus — likely to require a high donation
- Charadrius alticola — likely to require a high donation
- Charadrius asiaticus — likely to require a high donation
- Charadrius australis — likely to require a high donation
- Charadrius bicinctus — likely to require a high donation
- Charadrius collaris — likely to require a high donation
- Charadrius dubius — likely to require a high donation
- Charadrius falklandicus — likely to require a high donation
- Charadrius forbesi — likely to require a high donation
- Charadrius hiaticula — likely to require a high donation
- Charadrius javanicus — likely to require a high donation
- Charadrius leschenaultii — likely to require a high donation
- Charadrius marginatus — likely to require a high donation
- Charadrius melodus — likely to require a high donation
- Charadrius modestus — likely to require a high donation
- Charadrius mongolus — likely to require a high donation
- Charadrius montanus — likely to require a high donation
- Charadrius obscurus — likely to require a high donation
- Charadrius pallidus — likely to require a high donation
- Charadrius pecuarius — likely to require a high donation
- Charadrius peronii — likely to require a high donation
- Charadrius placidus — likely to require a high donation
- Charadrius ruficapillus — likely to require a high donation
- Charadrius sanctaehelenae — likely to require a high donation
- Charadrius semipalmatus — likely to require a high donation
- Charadrius thoracicus — likely to require a high donation
- Charadrius tricollaris — likely to require a high donation
- Charadrius veredus — likely to require a high donation
- Charadrius vociferus — likely to require a high donation
- Charadrius wilsonia — likely to require a high donation
- Charitospiza eucosma — likely to require a high donation
- Charmosyna amabilis — likely to require a substantial donation
- Charmosyna diadema — likely to require a substantial donation
- Charmosyna josefinae — likely to require a substantial donation
- Charmosyna margarethae — likely to require a substantial donation
- Charmosyna meeki — likely to require a substantial donation
- Charmosyna multistriata — likely to require a substantial donation
- Charmosyna palmarum — likely to require a substantial donation
- Charmosyna papou — likely to require a substantial donation
- Charmosyna placentis — likely to require a substantial donation
- Charmosyna pulchella — likely to require a substantial donation
- Charmosyna rubrigularis — likely to require a substantial donation
- Charmosyna rubronotata — likely to require a substantial donation
- Charmosyna toxopei — likely to require a substantial donation
- Charmosyna wilhelminae — likely to require a substantial donation
- Chasiempis sandwichensis — likely to require a high donation
- Chauna chavaria — likely to require a substantial donation
- Chauna torquata — likely to require a substantial donation
- Chelictinia riocourii — likely to require a substantial donation
- Chelidoptera tenebrosa — likely to require a high donation
- Chelidorhynx hypoxantha — likely to require a high donation
- Chen caerulescens — likely to require a substantial donation
- Chen canagica — likely to require a substantial donation
- Chen rossii — likely to require a substantial donation
- Cheramoeca leucosterna — likely to require a substantial donation
- Chersomanes albofasciata — likely to require a high donation
- Chersophilus duponti — likely to require a high donation
- Chionis albus — likely to require a substantial donation
- Chionis minor — likely to require a substantial donation
- Chiroxiphia boliviana — likely to require a high donation
- Chiroxiphia caudata — likely to require a high donation
- Chiroxiphia lanceolata — likely to require a high donation
- Chiroxiphia linearis — likely to require a high donation
- Chiroxiphia pareola — likely to require a high donation
- Chlamydera cerviniventris — likely to require a substantial donation
- Chlamydera guttata — likely to require a substantial donation
- Chlamydera lauterbachi — likely to require a substantial donation
- Chlamydera maculata — likely to require a substantial donation
- Chlamydera nuchalis — likely to require a substantial donation
- Chlamydochaera jefferyi — likely to require a high donation
- Chlamydotis undulata — likely to require a high donation
- Chlidonias hybrida — likely to require a high donation
- Chlidonias leucopterus — likely to require a high donation
- Chlidonias niger — likely to require a high donation
- Chloephaga hybrida — likely to require a substantial donation
- Chloephaga melanoptera — likely to require a substantial donation
- Chloephaga picta — likely to require a substantial donation
- Chloephaga poliocephala — likely to require a substantial donation
- Chloephaga rubidiceps — likely to require a substantial donation
- Chlorestes notata — likely to require a substantial donation
- Chloroceryle aenea — likely to require a high donation
- Chloroceryle amazona — likely to require a high donation
- Chloroceryle americana — likely to require a high donation
- Chloroceryle inda — likely to require a high donation
- Chlorocharis emiliae — likely to require a high donation
- Chlorochrysa calliparaea — likely to require a high donation
- Chlorochrysa nitidissima — likely to require a high donation
- Chlorochrysa phoenicotis — likely to require a high donation
- Chlorocichla falkensteini — likely to require a high donation
- Chlorocichla flavicollis — likely to require a high donation
- Chlorocichla flaviventris — likely to require a high donation
- Chlorocichla laetissima — likely to require a high donation
- Chlorocichla prigoginei — likely to require a high donation
- Chlorocichla simplex — likely to require a high donation
- Chloropeta gracilirostris — likely to require a high donation
- Chloropeta natalensis — likely to require a high donation
- Chloropeta similis — likely to require a high donation
- Chlorophanes spiza — likely to require a high donation
- Chlorophonia callophrys — likely to require a high donation
- Chlorophonia cyanea — likely to require a high donation
- Chlorophonia flavirostris — likely to require a high donation
- Chlorophonia occipitalis — likely to require a high donation
- Chlorophonia pyrrhophrys — likely to require a high donation
- Chloropsis aurifrons — likely to require a high donation
- Chloropsis cochinchinensis — likely to require a high donation
- Chloropsis cyanopogon — likely to require a high donation
- Chloropsis flavipennis — likely to require a high donation
- Chloropsis hardwickii — likely to require a high donation
- Chloropsis jerdoni — likely to require a high donation
- Chloropsis kinabaluensis — likely to require a high donation
- Chloropsis media — likely to require a high donation
- Chloropsis palawanensis — likely to require a high donation
- Chloropsis sonnerati — likely to require a high donation
- Chloropsis venusta — likely to require a high donation
- Chlorornis riefferii — likely to require a high donation
- Chlorospingus canigularis — likely to require a high donation
- Chlorospingus flavigularis — likely to require a high donation
- Chlorospingus flavovirens — likely to require a high donation
- Chlorospingus inornatus — likely to require a high donation
- Chlorospingus ophthalmicus — likely to require a high donation
- Chlorospingus parvirostris — likely to require a high donation
- Chlorospingus pileatus — likely to require a high donation
- Chlorospingus semifuscus — likely to require a high donation
- Chlorospingus tacarcunae — likely to require a high donation
- Chlorostilbon alice — likely to require a substantial donation
- Chlorostilbon assimilis — likely to require a substantial donation
- Chlorostilbon auriceps — likely to require a substantial donation
- Chlorostilbon canivetii — likely to require a substantial donation
- Chlorostilbon forficatus — likely to require a substantial donation
- Chlorostilbon gibsoni — likely to require a substantial donation
- Chlorostilbon lucidus — likely to require a substantial donation
- Chlorostilbon maugaeus — likely to require a substantial donation
- Chlorostilbon melanorhynchus — likely to require a substantial donation
- Chlorostilbon mellisugus — likely to require a substantial donation
- Chlorostilbon olivaresi — likely to require a substantial donation
- Chlorostilbon poortmani — likely to require a substantial donation
- Chlorostilbon ricordii — likely to require a substantial donation
- Chlorostilbon russatus — likely to require a substantial donation
- Chlorostilbon stenurus — likely to require a substantial donation
- Chlorostilbon swainsonii — likely to require a substantial donation
- Chlorothraupis carmioli — likely to require a high donation
- Chlorothraupis frenata — likely to require a high donation
- Chlorothraupis olivacea — likely to require a high donation
- Chlorothraupis stolzmanni — likely to require a high donation
- Chondestes grammacus — likely to require a high donation
- Chondrohierax uncinatus — likely to require a substantial donation
- Chondrohierax wilsonii — likely to require a substantial donation
- Chordeiles acutipennis — likely to require a high donation
- Chordeiles gundlachii — likely to require a high donation
- Chordeiles minor — likely to require a high donation
- Chordeiles pusillus — likely to require a high donation
- Chordeiles rupestris — likely to require a high donation
- Chrysococcyx basalis — likely to require a high donation
- Chrysococcyx caprius — likely to require a high donation
- Chrysococcyx crassirostris — likely to require a high donation
- Chrysococcyx cupreus — likely to require a high donation
- Chrysococcyx flavigularis — likely to require a high donation
- Chrysococcyx klaas — likely to require a high donation
- Chrysococcyx lucidus — likely to require a high donation
- Chrysococcyx maculatus — likely to require a high donation
- Chrysococcyx meyeri — likely to require a high donation
- Chrysococcyx minutillus — likely to require a high donation
- Chrysococcyx osculans — likely to require a high donation
- Chrysococcyx ruficollis — likely to require a high donation
- Chrysococcyx xanthorhynchus — likely to require a high donation
- Chrysocolaptes festivus — likely to require a high donation
- Chrysocolaptes lucidus — likely to require a high donation
- Chrysolampis mosquitus — likely to require a substantial donation
- Chrysolophus amherstiae — likely to require a substantial donation
- Chrysolophus pictus — likely to require a substantial donation
- Chrysomma altirostre — likely to require a high donation
- Chrysomma poecilotis — likely to require a high donation
- Chrysomma sinense — likely to require a high donation
- Chrysomus icterocephalus — likely to require a high donation
- Chrysomus ruficapillus — likely to require a high donation
- Chrysothlypis chrysomelas — likely to require a high donation
- Chrysothlypis salmoni — likely to require a high donation
- Chrysuronia oenone — likely to require a substantial donation
- Chthonicola sagittatus — likely to require a high donation
- Chunga burmeisteri — likely to require a substantial donation
- Cichladusa arquata — likely to require a high donation
- Cichladusa guttata — likely to require a high donation
- Cichladusa ruficauda — likely to require a high donation
- Cichlocolaptes leucophrus — likely to require a high donation
- Cichlopsis leucogenys — likely to require a high donation
- Cicinnurus magnificus — likely to require a high donation
- Cicinnurus regius — likely to require a high donation
- Cicinnurus respublica — likely to require a high donation
- Ciconia abdimii — likely to require a high donation
- Ciconia boyciana — likely to require a high donation
- Ciconia ciconia — likely to require a substantial donation
- Ciconia episcopus — likely to require a high donation
- Ciconia maguari — likely to require a high donation
- Ciconia nigra — likely to require a high donation
- Ciconia stormi — likely to require a high donation
- Cinclidium diana — likely to require a high donation
- Cinclidium frontale — likely to require a high donation
- Cinclidium leucurum — likely to require a high donation
- Cinclocerthia gutturalis — likely to require a high donation
- Cinclocerthia ruficauda — likely to require a high donation
- Cinclodes albidiventris — likely to require a high donation
- Cinclodes albiventris — likely to require a high donation
- Cinclodes antarcticus — likely to require a high donation
- Cinclodes aricomae — likely to require a high donation
- Cinclodes atacamensis — likely to require a high donation
- Cinclodes comechingonus — likely to require a high donation
- Cinclodes excelsior — likely to require a high donation
- Cinclodes fuscus — likely to require a high donation
- Cinclodes nigrofumosus — likely to require a high donation
- Cinclodes olrogi — likely to require a high donation
- Cinclodes oustaleti — likely to require a high donation
- Cinclodes pabsti — likely to require a high donation
- Cinclodes palliatus — likely to require a high donation
- Cinclodes patagonicus — likely to require a high donation
- Cinclodes taczanowskii — likely to require a high donation
- Cincloramphus cruralis — likely to require a high donation
- Cincloramphus mathewsi — likely to require a high donation
- Cinclosoma ajax — likely to require a high donation
- Cinclosoma castaneothorax — likely to require a high donation
- Cinclosoma castanotum — likely to require a high donation
- Cinclosoma cinnamomeum — likely to require a high donation
- Cinclosoma punctatum — likely to require a high donation
- Cinclus leucocephalus — likely to require a high donation
- Cinclus mexicanus — likely to require a high donation
- Cinclus pallasii — likely to require a high donation
- Cinnycerthia fulva — likely to require a high donation
- Cinnycerthia olivascens — likely to require a high donation
- Cinnycerthia peruana — likely to require a high donation
- Cinnycerthia unirufa — likely to require a high donation
- Cinnyricinclus femoralis — likely to require a high donation
- Cinnyricinclus leucogaster — likely to require a high donation
- Cinnyricinclus sharpii — likely to require a high donation
- Cinnyris tsavoensis — likely to require a high donation
- Circaetus beaudouini — likely to require a high donation
- Circaetus cinerascens — likely to require a substantial donation
- Circaetus cinereus — likely to require a high donation