When 136 Bird Species Show Up At A Feeder, Which One Wins?

There’s something tranquil about watching birds coexist at your backyard feeder, pecking away in their quirky abandon. That is, until the local Blue Jay arrives, flushing all your daintier songbirds out in a raucous flurry. It might seem like just plain bullying, but there’s more going on than meets the eye in the fast-moving (and frankly addicting) world of bird-feeder drama. Setting out a limited food resource (like a feeder full of seeds) in a time of scarcity (like winter) naturally brings birds into conflict. Just beyond your kitchen windowpane, your backyard feeder is creating the perfect stage to glimpse the inner workings of birds’ social lives—what behavioral ecologists call “dominance hierarchies.”

https://www.allaboutbirds.org/when-136-bird-species-show-up-at-a-feeder-which-one-wins/