Song Sparrows, and now, Tree Swallows (and now with song samples)

The song sparrows have center stage right now. If you go down to sparrow central (Millennium Park in West Roxbury) at mid-day, you can hear a rich variety of songs as you walk along the edge. Add the migrating groups and you have song sparrows everywhere you look--running mouse-like through the brush, feeding pathside, singing from the outer limbs of what seems like every available tree.

Here's a sampling. #1: Conventional song. #2 Nice trill at end. #3 I honestly don't know what this is. I recorded it because it sounded like a bad chickadee (you can hear the similarity when the chickadee starts singing later in the recording). I'd like to think it's a song sparrow trying out a chickadee song...

There are flying insects again. I was walking through a swarm of gnats by the bridge and I was wondering when the flycatchers would be back when I heard a familiar bubbly call--a couple of tree swallow checking out what I hope are potential homes.