Blue jay - Wikipedia
Blue Jay - Cyanocitta cristata - Birds of the World
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All About Birds California (Cornell Lab of Ornithology)
Why do blue jays scream? - Quora
BLANE KLEMEK OUTDOORS: There's more to blue jays than meets the eye
Facts About the Local Blue Jays
A Sick Blue Jay - FeederWatch
Audubon Bird: Blue Jay Plush
After a Frantic Year, It's Time for 'Slow Birding' - The New York Times