SW Idaho bird sounds

I'm not sure what kind of birds these are (except for the occasional hybrid doves), but there were about twelve of them in the top of a large northern catalpa tree (which had a bird feeder in it, which attracts a lot of birds; before it had a bird feeder, I didn't often see birds in it). The birds are maybe a bit bigger than starlings, with somewhat longer tails (but not as long as a magpie; the birds were smaller than magpies, too, of course); they were a dark color, but were too far away for me to discern their exact coloring. It wasn't particularly sunny, on Monday when I recorded this, but on Sunday, I heard the same birds (and it was sunny then).