So, I think Mr. Neil has pine siskins nesting around his yard, they've stuck around and have been singing their territory song all spring. I love how like a house wren, they are a tiny bird with a loud crazy song. I got video of one singing here (you'll also hear a buttload of goldfinches singing in the background): [youtube]http://www.youtube.com/watch?v=IUzTlV1dCWA[/youtube]