My best guess it's due to the season. When I first saw them I thought I would try getting a couple shots of them sitting in their places. Little did I know they were prepping for each other by putting on a display. They would stare at each other and then alternately, flash each other their wing span and a feather ruffle. I'm betting a mating dance. It was the first time I had seen something like this from Cowbirds.
|Brown Headed Cowbirds sizing each other up...|
|Here I am in all my glory...|
|Oh yeah! Look at this!...|
|Ok...Ok... Look at this!...|
|You're a poser! You heard me a poser!...|
|I can do this all day... I think I'm starting to like you...|
|You're not so bad yourself big boy...|