Aug 2 – Census surprises | Race Rocks Ecological Reserve-

One of the reasons for doing a weekly census is to put down in writing the numbers of mammals and birds that are actually in the reserve. This gives us the opportunity to compare the results, not simply rely on memory. And that’s a good thing! My impression on my return to Race Rocks is that there were a lot fewer gulls here than last year. A check of a census at a similar date in 2022 shows that not to be true. The numbers are actually very similar, but down about 15% from the same period in 2021. Census records the high counts of each species observed during the day. The marine mammals, for instance are best counted at low tide when most are hauled out. The adult gulls are at their highest numbers first thing in the morning and shorebirds gather on the east beach in late afternoon. Gull chicks can be counted anytime, but are usually undercounted because of their great hiding skills. In between, the census person watches for any other birds and animals that might show themselves.

Gull chick hidden in the marigolds.

Today’s census had several surprises apart from the number of gulls. While on the jetty, I thought I caught the flash of a bird in the corner of my eye. It was more than one. At least 3 swallows were feeding on insects in the small bay beside the jetty. I managed to get some bad photos, but good enough to identify two different Barn Swallows and one Violet-green Swallow. Later in the day, a Lesser Yellowlegs was resting with the other shorebirds, and a Parasitic Jaeger (also identified by bad photos) headed west not far off Great Race. An adult and juvenile Glaucous-winged Gull were out for a little swim. It always amazes me to see these youngsters in the water!

Lesser Yellowlegs, possibly the first documented for Race Rocks. First on eBird for the Race Rocks hotspot.

Out for a swim

Among the sea lions today, I found one entangled with a fishing lure. This poor animal has been her for several weeks. Another had been branded for a research study. I’ll report this number to get its history.