Summary ²

The yellow-billed loon (Gavia adamsii), also known as the white-billed diver, is the largest member of the loon or diver family. Breeding adults have a black head, white underparts and chequered black-and-white mantle. Non-breeding plumage is drabber with the chin and foreneck white. The main distinguishing feature from great northern loon is the longer straw-yellow bill which, because the culmen is straight, appears slightly uptilted.

Sources and Credits

1. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
2. (c) Wikipedia, some rights reserved (CC BY-SA), https://hub.toolforge.org/P3151:4622?lang=

More Info

• iNat taxon page
• Animal Diversity Web
• Biodiversity Heritage Library
• BOLD Systems BIN search
• CalPhotos
• Global Biodiversity Information Facility (GBIF)
• NatureServe Explorer 2.0
• NBN Atlas
• VertNet
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• 日本のレッドデータ検索システム

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