Sometimes, one just gets lucky. I had been hearing Blue-gray Gnatcatchers, which arrive early in April. They're so tiny and quick, I hear them more often than see them. But, a couple days ago, I found a pair in an ash tree near the driveway, and they were building a nest!
The female is grayer than the male.
The male has more distinct markings. They are 4.5" long, just like the Carolina Chickadees, but weigh only half as much, 0.2 oz. They remind me of a mini-mockingbird and have a prominent white eye-ring.
The nest is a small cup of plant down and spider webs, decorated with lichens, similar to a hummingbird nest. This one must be 60 feet above the ground. The spider webs allow for stretching. The female usually lay 4-5 pale blue eggs and the pair both incubate them for 13 days.
They have been hard at work together. Their song is a thin, musical warble. Their call note is a distinctive, wheezy, nasal little "spee".
Do you see the spider webs holding the nest together?
Here's a short video from this morning of their movements. Enjoy!