Cold gray wind

I checked the butterfly milkweed but didn't see any caterpillars, so I guess they crawled off to pupate.  I don't know if it was the cold, the wind, a hawk, or what, but I saw nothing till late afternoon.  Then there was a brief scramble at the feeders.  A cardinal popped up on the seed feeder and a Carolina wren foraged under the mountain mint.  Then three bluebirds arrived.  The male ate mealworms followed by the female.  A fledgling perched on the hanger but didn't figure out what its parents were demonstrating.  The adults flew off and the youngster followed them.  

Not that I could see it in this weather, but this was the last day when day was longer than night.  According to the newspaper, "The autumnal equinox on Sept. 23 marked the end of summer and the beginning of fall with the sun shining directly over the equator, according to NASA...However, the actual date with an equal day and night varies locally, depending on latitude, or distance from the equator."