While I was on vacation in Europe I missed the chance to report on an unusual bird in Pennsylvania this summer.
First seen in early June, dickcissels (Spiza americana) have now been reported in 14 of Pennsylvania's 67 counties, north, south, east and west.
Their sudden appearance in the middle of the nesting season is a tribute to their peripatetic lives. If nesting fails at their preferred location they'll travel a thousand miles to find a better nesting site.
Perhaps they came to Pennsylvania this year because there's a severe drought where they usually nest in the plains of North and South Dakota and Montana. Bob Mulvihill wrote about this correlation during the dickcissel invasion of 1988 (click here and scroll to page 6).
In the summer of 2012 when there was a severe drought in the Midwest, dickcissels came back to Pennsylvania. Read more about them in this vintage post from June 2012: Dickcissels
(June 2017 photo by Anthony Bruno)