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) Guy Monty, some rights reserved (CC BY-NC-SA), http://farm6.static.flickr.com/5041/5250141279_b4e704a189.jpg
2. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Gavia_adamsii

More Info

• iNaturalist.ca 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
• Xeno-canto
• 日本のレッドデータ検索システム

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