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Native Californian, biologist, wildlife conservation consultant, retired Smithsonian scientist, father of two daughters, grandfather of four. INTJ. Believes nature is infinitely more interesting than shopping malls. Born 100 years too late.
Showing posts with label burrowing owl. Show all posts
Showing posts with label burrowing owl. Show all posts

Tuesday, November 22, 2011

A meal that kept giving




There was no gaseous bloat, no writhing skin bag of maggots.

Just a cold carcass, which in the words of cowboy curmudgeon Wallace McRae, had barely started its 'transformation ride'*.

"Now, if we had 'really beeg cojones' ", I mused, "we'd gut this elk and put a cam in the body cavity".

The gaggingly repugnant but most sporting of camera trap sets -- the 'chest-cavity set' periodically tempts me as a route to up-close and personal pics of hide-tearing flesh-gulping predators.

Cavity sets,  if you are willing to crawl into dark places, are usually reserved for hollow logs, burrows and caves.

Wildlife photographer Alan Root knows no limits in such matters (at least in his youth), and to him we owe gratitude for showing the marvelous possibilities in Mysterious Castles of Clay.

Even if you don a garbage bag, setting a camera in the chest cavity of a large dead ungulate is a messy feat.

But who would opt for the alternative of crawling into the rib cage and spending the night there with camera in hand?

And yet, there's more than one account of a freezing frontiersman bundling up in a fresh buffalo hide or crawling into an eviscerated but steaming carcass.

A sound sleep they didn't get, but kick-boxing wolves under a wet hide certainly warmed them up.

But I'm getting off track.

As you might have guessed, our cojones were not equal to the task, so we settled for the unimaginative 'cam-beside-carcass set', and we still got some surprises.

The cams were set for night photos, but circumstantial evidence told us that vultures first feasted on elk lips and eyeballs; then they scalped the faces, slit their bellies, dragged out the viscera, and liberally whitewashed the neighborhood.

The carcasses grew gaunt but were still in one piece a month later.

Only 3 scavengers were to be counted in pixels, and only a deer mouse was photographed climbing into the meat locker.

The rest tended the carrion like a garden, apparently picking tender maggots and crunchy beetles from the exodus generated by aging flesh.

A burrowing owl was the most popular visitor -- making 9 forays.





A coyote made 3 visits, but was never seen tearing hide or gulping meat.




Like the owl it seemed to harvest insects, but lacking a beak, straw was unavoidable.




The fare at this diner didn't measure up to the beef at the Carrion Cafe.

The elk was more like a garden -- a meal that kept giving.


*/ If you were too lazy to click on the first link, I'm reminding you that you won't regret reading McRae's "Reincarnation".

Thursday, January 14, 2010

More badger dig visitors




As owls go, burrowing owls are relatively small, but they don't restrict themselves to small burrows, as you see here.  

Back in November we set three camera traps at what looked to be convincing badger digs -- broad holes with big tailings containing big rocks and big dirt clods.

Ground squirrels don't dig burrows like that, but badgers do, whether for habitation or rooting out rodents.

Back in 1929 and 1930 camera trapper Tappan Gregory made camera trap sets at badger diggings in Montana.

In an article titled "In pursuit of badgers" he reported making sets using a trip wire without bait, and he got a badger at two out of four sets.

And here's the rub, he got both photos after only 2 nights!

On the Chimineas Ranch we have had cameras at badger burrows for over 100 camera trap nights, and no badger has shown its face.

It's disappointing, but we're not complaining.

Burrow tailings are an interesting stage for grassland drama.

As long as the burrowing owls visit and the pocket mice duke it out there, we can wait for badger.


Reference


Gregory, T. 1932. In pursuit of badgers. Journal of Mammalogy, 13(4):329-330

Wednesday, November 25, 2009

Burrowing owl at the badger dig

































On November 1st at 6:43 AM the burrowing owl made its only appearance -- ten days after we set the camera.

It immediately crept down into the burrow entrance where the camera captured images of its speckled interscapular and wing feathers.



Perhaps this assured the bird that nothing predacious was lurking below, because it spent the next 10 minutes above ground posing for pictures.



In my undergrad years I  was quite taken with burrowing owls.

Their table scraps -- pellets, kangaroo rat legs,  and rodent skulls -- decorated the dashboard of my car,  mementos of good trips to the charming desolation of San Benito County.



According to Hans Peeter's book, Field Guide to Owls of California and the West (UC Press) burrowing owls decorate their nests and burrow entrances with chunks of cow flops and road apples.

Another endearing trait.

We'll be on the lookout for breeding burrowing owls in the spring.