I found a male MacGillivray's Warbler this morning (April 19th), this appears to be a very early date for Colorado. I looked at my records, and the earliest one I've seen previously, was in Pueblo on April 30th, so this is 11 days before that. All my other spring migrant early dates are from early May for this species. Are there any other early dates? The bird gave me a nice look, and it chipped as well.
Brandon Percival