Grzimek Birds
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- lark bunting
Calamospiza melanocorys
- lark bunting
- greater short-toed lark
Calandrella brachydactyla
- greater short-toed lark
- Lapland longspur
Calcarius lapponicus
- Lapland longspur
- great knot
Calidris tenuirostris
- great knot
- kokako
Callaeas cinereus
- kokako
- Cory's shearwater
Calonectris diomedea
- Cory's shearwater
- Hose's broadbill
Calyptomena hosii
- Hose's broadbill
- woodpecker finch
Camarhynchus pallidus
- woodpecker finch
- red-shouldered cuckoo-shrike
Campephaga phoenicea
- red-shouldered cuckoo-shrike
- ivory-billed woodpecker
Campephilus principalis
- ivory-billed woodpecker
- Bennett's woodpecker
Campethera bennettii
- Bennett's woodpecker
- golden cuckoo-shrike
Campochaera sloetii
- golden cuckoo-shrike
- northern beardless tyrannulet
Camptostoma imberbe
- northern beardless tyrannulet
- red-billed scythebill
Campylorhamphus trochilirostris
- red-billed scythebill
- cactus wren
Campylorhynchus brunneicapillus
- cactus wren