Weekly Bird: Prothonotary Warbler – Be Your Own Birder
Nestpionage! And Other Feathered Curiosities From History : NPR
Ohio Division of Wildlife - The Prothonotary Warbler got its name from the bright yellow robes worn by papal clerks, known as prothonotaries, in the Roman Catholic church. This one photographed recently
Prothonotary Warbler Overview, All About Birds, Cornell Lab of Ornithology