Okay, this is all Northern California, specifically the northernmost East Bay of the SF Bay area:
Compared to my childhood, there are: many more hawks and falcons (probably because of banning DDT), more egrets, more blue herons, more eagles, more wild turkeys. Many more crows (but I know why, my Dad says there used to be a bounty on them, like a nickel a crow).
There are tons of mockingbirds but I think about the same as before, likewise blackbirds. I don’t hear many owls here in suburbia. I don’t see as many bats (I know, not a bird but they do fly). We have more sierra jays (the crested blue kind, as opossed to the flat head scrub or Mexican jays) down here in the Bay Area. For some reason, the starlings are less this year, I really don’t know why, but don’t mind a bit. Also, we have tons of mourning doves, the IQ challenged member of the bird world.
I don’t know if Calif. ever was big on songbirds but with all these cats, it’s easy to observe that the obnoxious or large birds are doing okay. The only smallish birds that I see in huge numbers are brown towhees, which scratch at the ground. It surprises me that the cats haven’t decimated them. Maybe the cat thing is overstated and that its actually pollution, lack of food sources or even noise that has driven the songbirds away.
We have bluebirds up in the canyon but I never see them around houses. I bet they are likely cat victims. Oh yeah, it seems like the same number of hummingbirds as in my yute.
To sum up, I have often pondered that perhaps the birds I see every day are those who have adapted to so many people and probably are a small percentage of the variety that once lived here. But I don’t really have the science to know if thats true, because even weeds provide a lot of seeds and I don’t know that the native plants were equal, less or more at providing that kind of food source.