Birds that are mainly black in color are abundant at my feeders right now.
What's with all the cawing? UW team eavesdrops on crows
Viral video shows blackbirds falling from sky in Mexico - The
Wild Bird Diseases: What You Need to Know - Birds and Blooms
Birds of different feathers flock together
The Eternal Seductive Beauty of Feathers
Dinosaurs of a feather flocked together, University of Alberta
Birds of a Feather Video-Flock Together: Design and Evaluation of
Bird migration Indiana: How it works, and why Indiana is a hot spot
Birds of a Feather Flock Together - Proverb, Origin & Meaning