Dec 19

Visitors from Mexico

Heermann's Gulls roost on the rocks by Edmonds Pier. (Thomas Bancroft)

Heermann’s Gulls roost on the rocks by Edmonds Pier. (Thomas Bancroft)

“What are those seagulls?” came from behind me, “They’re a lot darker than our ones back east.” Half a dozen birds stood on the gray rocks. Their bills were tucked under back feathers, and their eyes shut.

“Heerman’s,” I said, “visitors up from Mexico. They come up for the summer and fall.”

“Wow, so they are not Herring Gulls,” one of the three women said. It was the common gull near their New England home. They watched for another few seconds and then wandered on toward the Edmonds Pier. I probably should have pointed to the Glaucous-winged Gull that was on a different rock, but these Heerman’s had captured my imagination.

What possessed them to come north. These looked like adults. Their heads were heavily mottled, bill red with a black tip, typical winter plumage. Their dark gray backs and lighter gray undersides blended in with the rocks that had been used to make this seawall. I hadn’t noticed them when I first walked up the ramp. 

They were mostly sleeping. Occasionally, one would pull its bill out from under back feathers, look around a little and then tuck it back in, closing its eyes. They looked comfortable, content, with not a care in the world, while I wore a heavy sweatshirt, wind jacket, gloves, and was definitely cold on this November day.

In the breeding season, their head would be pure white, and a bright red ring would surround their dark eye. Maybe I’ll see breeding condition birds when I go to Baja in March. Over 90% of the world’s population breeds on one island, Isla Raza, in the Gulf of California. In much fewer numbers, a few nest on other islands in the Gulf or along the Baja Peninsula. So far, they have never successfully nested in the United States. But they sure like to move north following breeding. They come up the Pacific coast as far as British Columbia and even loop down into Puget Sound, staying into the fall before heading back south. Early November seemed late for them, and these individuals might soon have a yearning for more southern weather. 

During the breeding season, most are offshore feeders, chasing schools of herring, joining cormorants, pelicans, and boobies. They are excellent kleptoparasites, even grabbing a fish out of a pelican’s mouths. They must find something to eat here in Puget Sound, but I’ve only ever seen them roosting or cruising along the shoreline. Perhaps, they find schooling fish offshore here, too.

Three of them woke and took off, heading out over the water. The other ones looked around for a minute before they too left. 

Heermann's Gulls roost on the rocks by Edmonds Pier. (Thomas Bancroft)

Heermann’s Gulls roost on the rocks by Edmonds Pier. (Thomas Bancroft)

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3 Responses to “Visitors from Mexico”

  1. Up here around Birch Bay I’ll see these in small numbers. I do see them on occasion when there are large minnow schools near the surface. They and other gulls, auklets, murres & seals feasting by the beakful. Cool to watch. Nice article & photos.

  2. Barbie says:

    Loved the info on the gulls.

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