Mockingbirds can really sing almost non-stop for quite some time. Not sure where he was finding the necessary air to carry on that way - it was already nearly 90 at 7 am with matching humidity. Not a day to enjoy the outside.
Just got back from two weeks in the Mid-Atlantic where I heard and saw many Mockingbirds and Carolina Wrens, two species we don't see often in Michigan. I enjoyed hearing them.
It is very hot and humid today as well 79 and 92 with the humidity!!