I checked in and around Riverbank Park in Westbrook from sunrise to about 8:30am this morning (3/5) and saw no sign of the Black-headed Gull. Ring-billed Gulls trickled in during my stay, with about 40 present when I left. I suspect more gulls will join the group throughout the day.
Thanks in advance to anyone who sends positive/negative reports on the Black-headed Gull.
Inspiring Nature Connection in New England joshfecteau.com | patreon.com/JoshFecteau