Bird ID

["DSteinwedel" DSteinwedel]

Hi Everyone,

These birds showed up outside my office a few weeks ago when the weather got 
suddenly 
warm and they returned today with a vengeance. I was able to grab my recorder 
this time 
around. Can anybody identify them for me? They are small and either black or 
very dark blue. 

They're located in Novato, CA, right next to the wetlands restoration 
project--so pretty close 
to the bay.

I put a file up on the group site called Novato Bird ID Sample.mp3. Here's the 
link...

http://f1.grp.yahoofs.com/v1/UCR-SSuFXDXcWXdmd4YlpehNRuOU-ejHuJz-
CV_Pyd3SqusF8A6Wn7LzUDcIwtK1abrvpfc6yr5COkPYIIZ_VoMy2MlM102E2Q/Novato%2C%20C
A%20Bird%20ID%20Sample.mp3

Thanks!
Dave