Migration is Not Always Caused by a Change in Season
This is not a scientific study on birds, but just a fun observation made by me. Today I had some unusual birds visit my yard in a year that has brought many different sightings. But today's birds were at least explainable. The neighbor behind me started an extensive renovation on his home this morning (bright and early), so we heard all kinds of banging and beeping. Birds are not fond of strange noises. It seems that the birds that hang out in my neighbor's yard decided to come to mine today (he is also an avid birder).
The first bird that caught my notice was the Eastern Bluebird. This is an occasional visitor to my yard, but today he was here quite a while, even taking a swim in my in-ground bird bath. While watching the bluebird, another bird caught my eye--it appeared to be a Black and White Warbler (at least that's the best I can do from later checking Sibley's which I photographed for this post as I will never get a photo of the real thing).
So it is not always the changing seasons that cause birds to move around--sometimes they are just looking for a safe haven from the hustle and bustle!