Thursday, April 30, 2009
Spring Birds and a
Wednesday, April 29, 2009
Giant Pollinating Moth
A little research on the internet showed me that this huge moth that is almost the size of a hummingbird is called, get this, a hummingbird moth! The family, sphinx or hawk moths, are nicknamed hummingbird moths because of their resemblance.
This particular species is a white-lined sphinx moth (Hyles lineata). The species name lineata refers to the the white lines that stripe them. They also have a tan line down each wing.
Several white-lined sphinx moths darted around the bush, moving from flower to flower. They didn't seem particularly disturbed by me or Henry. Apparently they often prefer white or light-colored flowers because they are easier to see during dusk and night, their most active period.
Being moths, they have to go to a caterpillar stage, and they like to burrow into the ground. Wow! Caver caterpillars that morph into hummingbird-like moths. These are rad! Not only that, but they are found all over the U.S.
To learn more about white-lined sphinx moths, check out the great Butterflies and Moths website or see some awesome photos at this blog.
The moths were constantly moving, and their long proboscis (that's a fun word to use), was obviously well-adapted for the deep tubes of the flowers.
Tuesday, April 28, 2009
Fun Outside
Monday, April 27, 2009
Desert Destination: Black Rock Lava Flow
Every Monday we visit a Desert Destination.
Out in the middle of the three-hour long drive between Ely and Tonopah, with no public bathrooms, no telephones, no gas, and no soda machines, part of US Highway 6 passes through the Lunar Crater Volcanic Field. A BLM sign alerts drivers who are still awake about the nearby Black Rock Lava Flow. You can see it from the highway, but it's much more interesting to take the one-mile detour (the sign says two miles, but it's wrong), and get out and stretch your legs a bit.
A sign gives some information about the lava flow with the unimaginative name. The lava flow is made of basalt. Hot lava swelled up inside the nearby cinder cone and broke through the walls, flowing towards the west. As the lava cooled, it solidified. The Black Rock Lava Flow is the youngest of the lava flows in the lunar volcanic field, and covers about 1,900 acres.
Behind the lava flow are a couple of the many cinder cones in the area. The entire Lunar Crater area in central Nevada encompasses about 100 square miles and includes more than 20 extinct volcanoes and 35 lava flows. You can read a bit more about the geology of the area on this USGS page.
I was a little surprised when I walked up to the lava flow to see that not all of it was solid lava, like I've seen at other lava flows. The south edge of the lava flow has many scattered pieces of basalt.
I visited in March, when the temperatures were wonderful for exploring. In the middle of the summer, this area can be scorching, with the black basalt absorbing the hot desert sun. In the winter, it can be covered in snow.
The basalt hosts an interesting array of lichens. Here's an interesting post about lichens in the Salt Lake area. They certainly lend more color to what might be described as a rather stark view.
I should mention that the Black Rock Lava Flow is many hours away from the Black Rock Desert, where the (in)famous Burning Man Festival is held every year.
Embedded in some of the basalt are rocks and crystals that the magma picked up deep within the earth on its way to the surface.
The road continues on around the lava field, where it becomes more continuous. I didn't have time to see the entire lava field, so when I got home I took a look at Google Earth and found this image of the lava flow (I added the labels):As you can see, the lava flow really stands out from the surrounding scenery. Not too far away is Lunar Crater, a maar about 4,000 feet across and 400 feet deep. I hope to get there soon!
Saturday, April 25, 2009
The Birds are Back
One of my favorite bird sounds is the sandhill crane, which sounds like sort of a rattling, gurgling goofball. I know, that's highly scientific. Maybe it would be better to call them pterodactyls like my husband does. If you want to hear the call, click here and go about half-way down the page.
There are a lot of other birds that have come back lately, and with the trees putting on leaves, it's getting harder to spot some of them. Some of the birds are busy building nests, while others are more intent on finding food. It's definitely a busy time of the year, and it's fascinating to observe it. So turn off your computer and head outside for one of the greatest shows on earth!
Friday, April 24, 2009
Playing in the Field
Thursday, April 23, 2009
Sheared Sheep
A specialized sheep shearing trailer is brought in, and the sheep are moved through it efficiently, with over 1,000 sheep sheared each day. Unfortunately I didn't manage to get any pictures of the actual shearing (I guess I'll have to keep this blog going another year to get the photos!). But I do have some photos of sheared sheep to show.
Most of the sheep will be leaving our area soon, heading towards their summer range. But they'll be back next fall. If you can't wait that long, here are some other posts I've done about sheep.
Wednesday, April 22, 2009
Burning on the Ranch
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