USFWS National Digital Library

- A guide to nestling development and aging in altricial passerines
- Birds; Perching birds; Research; Statistics;
- This is a guide to altricial passerines. It has an explanation of variables used for aging birds and an explanation of methodology employed, and provides information obtained while recording the early aging of the Dusky Flycatcher, the Carolina...
- Documents
- Adult male Red-winged Blackbird
- Birds; Perching birds;
- Finely National Wildlife Refuge Blackbird
- Images
- Allen's Hummingbird
- Karney; Birds; Perching birds
- Images
- Allen's Hummingbird
- Karney; Birds; Perching birds
- Images
- Alligator River National Wildlife Refuge Comprehensive Conservation Plan
- Document;Wildlife refuges; Planning
- alligatorriver08.pdf
- Documents
- American dipper
- Alaska;Birds; Migratory birds; neotropical migrant;Kodiak Island;perching Birds
- Images
- American dipper
- Birds; Migratory birds; Perching birds;
- Bird standing on rocks among vegetation at edge of rushing water of Three Sisters Creek on Kodiak Island.
- Images
- American goldfinch
- Birds; Perching birds;
- An American goldfinch is pictured upclose resting on a branch.
- Images
- American goldfinch
- Birds; Perching birds;
- An American goldfinch is seen perching.
- Images
- American goldfinch
- Birds; Perching birds;
- An American goldfinch is pictured perching on a branch.
- Images
- American pipit
- Birds; Migratory birds; Perching birds;
- Pipit standing on black rock on Pillar Mountain, Kodiak Island. For more information about shorebirds birds visit http://www.fws.gov/birds/.
- Images
- American robin
- Birds; Perching birds;
- An American robin is pictured sitting attentively on the ground.
- Images
- American robin
- Birds; Migratory birds; Perching birds;
- Bird standing on end of vertical dead branch in Lake County, Deschutes National Forest, Oregon. For more information about birds visit http://www.fws.gov/birds/.
- Images
- American robin
- Birds; Migratory birds; Perching birds;
- Close-up front view of bird sitting on branch with red berries.
- Images
- American Tree Sparrow
- Birds; Birdwatching; Perching birds; Wildlife refuges;
- An American Tree Sparrow perches on a branch in the DeSoto National Wildlife Refuge located in Iowa.
- Images
- Anna's Hummingbird
- Karney; Birds; Perching Birds
- Images
- Ash-throated flycatcher
- Birds; Perching birds;
- An ash-throated flycatcher is seen perching on a barb wire fence.
- Images
- Ash-throated flycatcher
- Birds; Migratory birds; Perching birds;
- Bird sitting on dead branch of tree in Modoc County, Modoc National Forest, Oregon. For more information about migratory birds visit http://www.fws.gov/birds/.
- Images
- Band-tailed pigeon
- Birds; Perching birds;
- An upclose shot of a band-tailed pigeon perching on a branch.
- Images
- Barn swallow
- Birds; Migratory birds; Perching birds;
- Close-up side view of young bird with flight feathers and some down still attached.
- Images