Showing posts with label lizards. Show all posts
Showing posts with label lizards. Show all posts

Tuesday, July 12, 2016

San Diego Alligator Lizard

I found this beauty on the Santa Margarita River Trail near Fallbrook. It is a subspecies of Southern Alligator Lizard Whiptail. It is fully grown, about one foot in length.

San Diego Alligator Lizard
Whiptail. Fallbrook, California. July 3, 2016. Greg Gillson.

Thursday, July 9, 2015

Lizards at Torrey Pines Reserve

On a recent visit to the Torrey Pines Reserve I was able to photograph a couple of lizards.

The Western Fence Lizard is quite common in the West. They are 5-8 inches long, including the tail. The blue throat and sides of adult males are quite striking. The blue is lacking in females and immatures. Instead, for identification, the backs of the legs show quite a bit of yellow, as in the photo below.

Fence Lizard
Fence Lizard
The next lizard was quite small. The little yellow dots all over the torso were striking, but the barely discernible dark spot behind the front leg is the clinching identifying mark for Side-blotched Lizard.

I have just learned (Wikipedia) that there are 3 color morphs of males and 2 color morphs of females, all with different breeding strategies. If I am identifying it correctly, the lizard below is a yellow-throated female.

Side-blotched Lizard
Side-blotched Lizard. Torrey Pines Reserve, California. June 21, 2015. Greg Gillson.
Because of the high predation rates, these lizards are prolific breeders. The 1-inch long immatures are abundant--and very fast if, in fact, those are what I am seeing in the desert lands darting everywhere. The males can grow up to 6 inches long, but most are much smaller.

In recent weeks I've also seen Horned Lizard and Alligator Lizards, and perhaps others that were just too quick for me!

Sunday, June 14, 2015

Finding Gray Vireos on Kitchen Creek Road

From San Diego at sea level it is 54 miles east on Interstate 8 to Laguna Summit at just over 4000 feet. Now exit at Hwy 8 mile marker 54 on Kitchen Creek Road and it is 2.5 miles to the Pacific Crest Trail (PCT) parking area. This is the most reliable spot in San Diego County, indeed all of California, for finding Gray Vireos.

After living in San Diego County now for 21 months, I finally made the rather long trip (80 miles, 1 hour and 20 minutes from home) specifically to see this bird. 

Pacific Crest Trail on Kitchen Creek

On June 14, 2015 I rose at 4:30 a.m. and left home in San Marcos a bit after 5:00 a.m. I filled with gas then headed south on the 15 to the 8 and up, up, up. The June Gloom overcast stayed with me until I neared Pine Valley at about 3000 feet elevation. Then the newly risen sun shown directly in my eyes as I continued east. I arrived at the Pacific Crest Trail pullout at 6:30 a.m. and it was very birdy. In fact, I found 28 species here over the next 2 hours, as the temperature steadily climbed from 60F to 90F.

Map to Kitchen Creek Road

Within 15 minutes of arrival, between 500 and 1000 feet west on the PCT (Southbound) I heard my target species. There were 2 singing Gray Vireos and I photographed one of them at quite a distance up the hillside.

The bird was rather all-over gray. The under tail coverts and lower belly whiter. There was a thin white eye ring and a single faint wing bar.

Gray Vireo
Gray Vireo. Kitchen Creek, Pacific Crest Trail, San Diego County, California. June 14, 2015. Greg Gillson.
My 300th San Diego County bird!
The voice was a loud repeated series of 4 well-spaced sweet sliding whistles, one slightly buzzy, one higher: "suweet,  dzuwee, suweet, suwee." It sounded quite similar to Cassin's Vireo.

Compared to surrounding areas that don't seem to have Gray Vireos, the chaparral here is thicker and taller, interspersed with more boulders, and in a steeper canyon. There was a little creek down a couple hundred feet, but the vireo was up in the dry chaparral.

Looking down on Kitchen Creek
Looking down on Kitchen Creek
Chaparral was composed of dozens of species of large shrubs, smaller shrubs and flowers. Some I saw and think I may have identified correctly (guessed by picture-matching) using this website are: Big Berry Manzanita, Common Sagebrush, Golden Bowl Mariposa, Indian Paintbrush, Fringed Spineflower, Yucca, Toyon, Cholla, Chamas. Here is another page on common plants and animals of California's chaparral.

Wrentit
Wrentit
Typical birds included Wrentit, California Thrasher, Bewick's Wren, Spotted Towhee, California Towhee, Costa's Hummingbird, Ash-throated Flycatcher, and Black-chinned Sparrow. A Mountain Quail squawked once early.

Costa's Hummingbird
Costa's Hummingbird
One bird here that I rarely see is Scott's Oriole. It sings like a Western Meadowlark... or maybe like two meadowlarks harmonizing together--such a rich bright song coming from a dry, dull landscape.

Scott's Oriole
Scott's Oriole
Way down on the creek I saw a couple of California Quail and some Lawrence's Goldfinches. The calls of both Rock and Canyon Wrens echoed down the canyon. Not really the best habitat--a Cactus Wren chugged away across the canyon, unseen. That made 5 wren species within a quarter mile!

Black-headed Grosbeak
Black-headed Grosbeak
Birds of Kitchen Creek Road are on this hotspot list from eBird. It includes 143 species from the first 5 miles, from Interstate 8 to the gate.

Horned Lizard
Horned Lizard
At mile post 4.5 on Kitchen Creek Road is Cibbets Flat Campground. The oaks here add Oak Titmouse, White-breasted Nuthatch, Western Bluebird, House Wren, Acorn Woodpecker, Nuttall's Woodpecker, Black-chinned Hummingbird, Western Wood-Pewee, Lawrence's and Lesser Goldfinch, and Steller's Jays to the other chaparral birds.

Oak Titmouse
Oak Titmouse at Cibbets Flat Campground
Acorn Woodpecker
Acorn Woodpecker at Cibbets Flat Campground.