© 2008 Donna L. Watkins - Costa Rica - Blue & Gold Macaw

Paying attention to individual differences can help you identify birds, too. You can recognize many birds simply by noting their shapes, even if seen only in silhouette.
Other useful characteristics are a bird's posture, size (easiest to judge if you use familiar birds as a size reference), flight pattern and/or head-on flight profile, and the kind of habitat in which the bird was seen.
Start by learning to identify general groups of birds- warblers, flycatchers, hawks, owls, wrens- whose members all share certain similarities. As your observation skills improve, familiarize yourself with the field marks- colored or patterned areas on the bird's body, head, and wings- that help distinguish species.
Use the following features to help you:
Silhouette
Field marks
Posture
Size
Flight pattern
Habitat
This information comes from the web site of the Cornell Lab of Ornithology. Get details on these features at their All About Birds website.
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