There’s a huge flock on the Easton/Fairfield border near the reservoir. At least 20-30; seen them every day for the last week or two.

From the Danbury area you can also jump across to the Harlem Line in New York. I’m pretty sure you can take it right into Grand Central without any transfers

They may each have a slightly different niche. Even though they look like they’re doing the same thing, it may be different enough that they’re not stepping on each others’ toes. There’s a classic example I remember from ecology where there were a number of bird species living in gem same tree, but they were all using different parts of it, hence they had different niches.