Wednesday, July 4, 2012

Oatka Creek Park • June 22

Great Spangled Fritillary

Great Spangled Fritillary. Note how the eye looks like a soccer ball. Actually, a butterfly's eye does not look like this. The eye is composed of thousands of tiny "ommatidia" or microscopic lens and light sensor (photoreceptive) units. The sensor in the digital camera cannot resolve these microscopic lenses, so it "aliases" them to a lower spatial frequency that looks like a soccer ball. Class dismissed.

Gray Catbird

Eastern Phoebe

Eastern Comma. You can just see the soccer ball aliasing here, too.

Red Admiral

Ebony Jewelwing. This is a male. The female looks black with a white spot on its wing.

Baltimore Oriole

Baltimore Oriole

Indigo Bunting

Indigo Bunting

Eastern Bluebird

Yellow Warbler

Lawrence's Warbler. This sighting caused a minor stir in the birding community. A Lawrence's Warbler is a hybrid of a Golden-winged Warbler and a Blue-winged Warbler. It tends to favor the Golden-winged Warbler in the deal. A Brewster's Warbler would be a hybrid that favors the Blue-winged Warbler.

Lawrence's Warbler. Both Golden-winged Warbler and Lawrence's Warbler are rare in our area in the summer. (They are expected in very low numbers during spring and fall migrations.) Cornell's asked for copies of my pictures to confirm the observation.

Lawrence's Warbler. Is this bird breeding in Oatka Creek Park this year? A confirmation would be very interesting! By the way, there are several ways to confirm breeding without approaching or even finding the nest. One of the easiest is to see the bird carrying food. This would indicate there are nestlings to be fed.

Common Yellowthroat

Common Yellowthroat

Painted Lady