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District of Columbia Argonne National Laboratory
Feather section, Page 6
California Argonne National Laboratory
ornithology – BirdNation
Scientific User Facilities Argonne National Laboratory
Kids' Corner — Sacramento Audubon Society
For Agile Flight, Just Add Feathers
SONGS OF PLACE AND TIME: Birdsong and the Dawn Chorus in Natural
Birds SpringerLink
Flight feather
Flight feather
Feather position and measured feather parameters. (A) Position of