Emergent synchrony is a universal feature of behavior.
What is the correct idiom? 'Birds of the same feather flock together' OR ' Birds of a feather flock together'? - Quora
Why Do Birds Flock? - Safety.
Flocking Together for Birds – Connecting People, Birds and Land for a Healthy World
Do Birds of a Feather Flock Together?
Marvellous murmurations: why do birds flock together?
Why do birds flock in winter?
Marvellous murmurations: why do birds flock together?
Do hawks flock together? All About Birds All About Birds
Birds of a feather flock together の意味, 使い方
Birds of a Feather Flock Together by David Lilly - The Canadian Nature Photographer