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Resources and helpful links
Other popular bird organizations
Bird Conservancy of the Rockies
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Report rare birds to the Colorado Bird Records Committee
Chipping Sparrows: fledgling (to above) and adult (below). Photos by Catherine Ortega.
What's in a bird name?
Four-letter code abbreviations
Checklist of North and Central American Birds
Browse by order and family (Cornell University)
Recent classification changes
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Literature
Bird fun
Bird populations
Organizations
Bird names
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