In Vermont there are 2 kinds of Kinglets- Golden-Crowned and Ruby-crowned. They are both tiny birds (4-4.5 inches). . The Golden-crowned is with us year-round, while the Ruby-crowned is a summer migrant. I have recently enjoyed viewing and hearing both birds.
Here is the Golden-crowned:
Here is the Ruby-crowned:
This song was of particular interest to me because the Whistled part sounds like a Connecticut Warbler. Listen for a 2-part song- a descending chirrchirrchirrchirr, and and a whistle. The recording starts with a Chickadee song. There are many Red-wing Blackbirds in the background. Clicking on this will open a new page. Use your back button to return to the site.