ID Challenge: Mew Gull NOT!

I photographed this small gull in Oceanside a few weeks ago. The tiny bill and round head made me seriously consider this as a possible rare Mew Gull, rather than the common Ring-billed Gull. I did observe Mew Gulls here last winter, and one was reported nearby recently, so I was on the look-out.

Small gull. Oceanside, California. November 8, 2015. Greg Gillson.

I remember an identification article that appeared in American Birds March 1980: "A method for separating juvenal and first-winter Ring-billed Gulls (Larus delewarensis) and Common Gulls (Larus canus)" by Anthony J. Lauro and Barbara J. Spencer. (pdf here)

This article was the first to show that the wing covert tip shape and color is the key to separating these very similar-looking birds in immature plumage. The wing coverts of immature Mew Gulls have medium dark solid rounded centers with pale edge. The wing coverts of immature Ring-billed Gulls have darker pointed centers with wider whiter tips.

Though the wing covert feathers are worn and faded, the photo below shows the pointed dark tips on the individual wing covert centers consistent with Ring-billed Gull, and not Mew Gull.

Hooked! Brandt's Cormorant at Oceanside

This Brandt's Cormorant was in the Oceanside marina recently. It was acting a bit dumpy.

Brandt's Cormorant. Oceanside, California. November 8, 2015. Greg Gillson.

As is the case for many fish-eating birds near such busy fishing harbors, it grabbed a baited hook and now wears it as "jewelry." As you may imagine, such a hook may become infected or otherwise fatally injure a bird.

A web page on how to best free a bird from a fishhook is here.

Scaly-breasted Munia in Carlsbad

"Where do I find Scaly-breasted Munia?" Visiting birders have asked this question since late 2013 when the bird's status in California was officially changed from feral escaped cage bird to wild naturalized resident ("established population"). Scaly-breasted Munias can now officially be counted on your ABA list (American Birding Association).

According to eBird, Scaly-breasted Munias have been found in the last month in California from San Luis Obispo to the Mexican border near Tijuana.

Scaly-breasted Munia (thick bill partially hidden by leaf). Carlsbad, California. October, 2015. Greg Gillson.

Juvenile male Scaly-breasted Munia.

Scaly-breasted Munias are known in the pet trade as Nutmeg Mannikins or Spice Finches. It is endemic in Asia from India to the Philippines.

I've seen these birds just about 5 times now in San Diego County. They are truly tiny birds, only 4-1/2 inches long--about the size of a goldfinch, though a bit pudgier with shorter tails. They form small flocks that give finch-like twittering calls. Though I am very good at identifying birds by their calls, I still haven't learned this bird's vocal differences--perhaps because they are in flocks and I haven't really heard just one bird call distinctly.

In San Diego County they seem to like brushy river bottoms at lower elevations. When the San Diego Bird Atlas was written in 2004, this species was "sporadic" in the county. They are now found in river bottoms near the coast the entire length of the county. They also follow the San Diego River from Mission Bay to Santee. If I had to name one location where they are most frequently encountered it would be Lake Murray. Over 100 individuals have been seen lately, though I have never seen them there. Another place where they are frequent is Batiquitos Lagoon.

Cassin's Kingbird at Poinsettia Park, Carlsbad

As do most birders, I like to see birds I've never seen before--especially birds rare to an area. There are several rare birds in the San Diego area now, including many returning for multiple winters. I'll go see them if I have available time; but some are rather distant for a quick trip. Frankly, I'd rather find my own rare birds. But that means I don't see rare birds as often as if I chased after rare birds that others have already found.

Thus, I was exploring a new park I noticed on the map in Carlsbad. Poinsettia Park is quite large--perhaps a half mile to walk around, rimmed with trees and paved walkways. It is 42 acres, has 3 baseball fields, basketball court, and 10 tennis courts. (website here). The west side is along an ungroomed wet canyon with many trees. It looks like a great place for migrant or winter rarities to be found. It has food, water, and shelter. Less than a mile inland, it will have mild temperatures that should provide insects for food all winter .

I found several flocks of birds, but didn't find anything rare. I did get a couple photos of a cooperative Cassin's Kingbird on a fence.

Cassin's Kingbird. Carlsbad, California. October 25, 2015. Greg Gillson.

Last year I wrote an identification article on identifying the "yellow-bellied" kingbirds: "ID: Western, Cassin's, and Tropical Kingbirds."

California Flying Fish

When the ocean waters are especially warm in southern California one can view California Flying Fish. They are really more "gliding" fish than flying fish, as they don't flap their "wings" (pectoral fins). They gain speed under the water and then jump out, gliding on large pectoral fins. They frequently glide 150 feet before touching the water--and even then, their flight is not necessarily over.

Flying fish have forked tails. The lower lobe of the tail is much longer than the upper. As their glide slows and they drop closer to the water's surface an amazing thing happens. Rather than splash back into the water, they may vibrate their lower tail lobe in the water to pick up speed and extend their flight! Thus, a fish may combine several glides into a single flight reaching several hundred feet! They may stay out of the water for more than 30 seconds.

Up to 19 inches long--California Flying Fish are the world's largest.

California Flying Fish. Off San Diego, California. October 11, 2015. Greg Gillson.

Vibrating the lower tail lobe for another bout of gliding.

Off it glides again!