Fly Fishing Properties

Why do birds outside a strange behavior?
I just realized they were all singing and making noise. I looked out the window and had a lot of birds bite back and forth from the tree in our yard to a tree outside our property (The tree was hundreds of birds). I saw the TV until I heard this loud "hissing" and when I looked back through the window, all birds had left the tree and they were all flying together (like a shoal of fish but the birds) around our house. This behavior has aroused my curiosity because I've never seen anything like I have before. Could it be that the birds mad because of a storm coming? It was a windy day and rain. all good, just landed from them in the tree again (at a time, too.) – Can be grackels, crows, starlings or apparently all species of birds at once assembled and form large roosting together. And all are common in Indiana.
Perhaps the flocks of starlings. Can form large flocks at this time of year. There is good information on the link. Ah, you're in Indiana. I think the phenomenon also occurs then.lol.
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