The unanimous opinion is Common Yellowthroat.  Thanks to all who replied!

Ryan



Ryan Farrell wrote:
> Yesterday I recorded an as yet unidentified bird singing along the Indian
> Creek Trail between the College Park Airport and Lake Artemesia.
>
> The bird sings twice during the clip, once at around 14 seconds, the second
> time at 32 secs (sorry for my mumbling in the background):
>
>      http://www.farrellfam.com/Unknown14May07.WMA
>
> Thanks in advance to anyone who can help!
>
> Good birding,
> Ryan Farrell
> College Park, MD