yes yes yes
yes they are much bigger
Yes more than twice the size.
The mighty cat, man, crow... basically most things that are bigger than it. oh and other meaner robins.
Apparently they're afraid of robins.
Jays may be slightly longer, but are slimmer than quails.
Both are passerine birds, both build nests in trees and shrubs. Other than that, they are very different. Blue jays are Corvids, related to ravens and crows. Robins are thrushes.
Robins! Robins! Robins!
Tanagers, robins, jays, hummingbirds, doves, owls, hawks, and others.
Yes. Blue jays often raid the nests of other species.
Blue jays and robins do not interbreed primarily due to differences in their mating behaviors, vocalizations, and reproductive timing. Even if they share the same habitat, blue jays tend to have more aggressive and territorial mating displays, while robins have distinct courtship songs that attract specific mates. Additionally, their nesting preferences and the timing of breeding seasons may not align, further reducing the chances of interbreeding. These factors contribute to behavioral isolation, which ensures that these two species remain reproductively separate despite living in proximity.
cats, snakes, hawks, owls, crows, raccoon, jays, squirrels.
Penguins, woodpeckers,gray jays, crows, ravens, grouse, turkeys, robins, and owls. that's all i know