In my last blog I mentioned that the Petit Manan crew had resighted a banded American Oystercatcher (AMOY) with its mate on Green Island which is adjacent to PMI and only accessible during low tide. After observing the banded AMOY in mid-May, we submitted our finding to the Bird Banding Lab website and received information about the bird. We discovered that it was born and banded as a chick in 2006 on Nantucket Island, Nantucket, MA. It was last resighted in 2014 in Charleston, South Carolina,
On our second visit over to Green Island we were combing the north-west side for any sign of Oystercatcher eggs, when we noticed that our 9 year-old banded AMOY, with its mate, were unusually vocal. So, we decided to move out of the area and use a spotting scope to watch from a distance. After about 15 minutes of scanning around we noticed tiny little chick heads in the rocks and sure enough they were 3 oystercatcher chicks! We all watched through the scope as the adults foraged around and were surprised how quickly the adults can extract the meat from a mussel and feed the chicks (about 3 seconds). AMOY chicks will usually stay with the adults for up to a year to perfect their foraging techniques.
After further research by Linda Welch we were informed that these were the first AMOY chicks to be discovered on Green Island since 1997! Not only that, they have now become the most northerly breeding pair within their range. How cool! We always thought that Green Island seemed like a perfect place for AMOYs to nest, and have seen them loafing there in recent years, but never found any eggs or chicks as the adults are very secretive. With just a few alarm calls by the adults, the chicks instinctively hide deep in the rocks of the intertidal zone. Each adult will constantly call and try to lure any predators out of the area. We just hope this pair can keep the prying eyes of the gulls away from discovering their chicks so they can grow up and successfully fledge. And we even received a certificate for our efforts.