Paisley Black Bird

I've been down to Saint Mary's Park watching these birds over the past several months and learned that these plump little sweeties are actually Brewer's Black Birds - like in the previous drawings. There are scores of them living on the south side of Bernal Heights and Friday I got within a few yards of one. There are also Cowbirds and Rusty Black Bird's over there. So really, no telling what this little guy was, other than some sort of Black Bird.