Went on a hunch to the wetland behind the campus lake and was rewarded with a clear sight of a great blue heron. The bird looked gray, rather than blue. Only when it opened its wings did one see a blue border on both wings. It perched on a small tree, its long and slender legs surprisingly steady on what must have been a thin branch at best. It has a dark patch on its crown and some yellow in the bill, which it opened once, as if to yawn or sigh. It kept turning its head around, its thick “s” shaped tube of a neck straightening and shortening at will. Here’s a picture from the website of Audobon (https://www.audubon.org/field-guide/bird/great-blue-heron).