Suddenly, two days ago, I started seeing the cormorants again. They disappeared from New Bedford harbor late last fall, were gone all winter, and then on Sunday I saw this big black bird pop up from swimming underwater: a cormorant, who was just as surprised to see me as I was to see it, and who immediately began swimming away from me, fast.

The day before that, Saturday, I saw three or four Red-breasted Mergansers. They came to the harbor last fall, and have been here ever since. But since then, I haven’t seen a one. It’s almost as if the cormorants and the mergansers traded places. The wintering waterfowl have gradually been leaving the harbor since March. The last time I saw a Common Loon was early last week, swimming around Fish Island, resplendent in his summer plumage. I have to say, I’m sad that they’re gone for the year.

It’s mating season for Herring Gulls. The gulls who live on the roof of the building next to our apartment have been getting noisy at night, so noisy that they have awakened me a number of times. One night last week, a terrible screeching squabble woke me up, then I heard something hit the roof — thunk! — and slide down, scrabbling and scraping. Mating season must be a rough time when you’re a gull.

May 26, 2007 — I’ve added a video showing a number of Herring Gull nests that I’ve discovered on the rooftops of New Bedford, including the nest on our roof.