Surprisingly, lighter plumage isn't necessarily better in hotter climates.
Why do ravens have bristle-like feathers at the base of their beaks? What are they there for? - Quora
Similar Species: Crows and Ravens
Common Raven Facts: Animals of Europe - WorldAtlas
Similar Species: Crows and Ravens
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As the crow dies: The strange world of bird funerals - BBC Science Focus Magazine
A raven is missing large wing feathers. Will they grow back? - Quora
The science behind caramel crows
Dishevelled Crows The Urban Nature Enthusiast
BirdNote: The Benefits Of A Raven's Black Feathers
American Crow
As it Happened: Kite v Ravens – Birds as Poetry —— Just because I WANDER – –doesn't mean I'm LOST
Did you know that a Common Raven's - Audubon California
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