About Me

My photo
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 pika. Show all posts
Showing posts with label pika. Show all posts

Wednesday, August 4, 2010

Denizens of Deadman


A chickaree aka  Douglas squirrel  came first. 

Well, Jake volunteered to join me, so I didn't have to climb Deadman alone.

Normally Fred would have been there too, but the redhead took him home so I could wrap up the workshop and pack up without distractions.

The cameras had been out for only 48 hours and memory should have led me to them like a bird dog, but even with the GPS we bumbled about looking for the first set.

Of course we checked the pictures as soon as we found it  -- the moment of truth had arrived.

The first visitor to the set, a runty chickaree and doubtless young of the year, left one picture the morning after we set the camera.

We clicked forward . . . blank images . . . and hallelujah!

There was bushy-tail poised on a rock and showing its diagnostically furry bicolored caudal appendage.


The bushy-tailed wood rat (Neotoma cinerea).

It had visited the second night and like the chickaree had left but one photo.

We resumed our climb to the top of the scree and found the second camera just before noon.

A pinon mouse had visited the first night.


Judging from those big ears  it was a Pinon mouse (Peromyscus truei)

And Little Chief Hare made a cameo appearance the next day.




Deadman had paid off, and we ate lunch with satisfaction beside the set.

Our mountaineering exercise had proved that habitat is often key to finding one's target species.

Both pika and bushy-tailed wood rat evolved in the footprints of glaciers.

For two years I had sought the wood rat among boulders and outcrops only a half mile from here.

It should have been there, but only after ploughing the literature did I learn that talus was also one of bushy-tail's favored habitats.


Our routes in and around Deadman Scree.


We explored the rest of the scree into early afternoon, and recorded waypoints for a big red fir, and a new colony of mountain beaver.

Then we drove back to camp to show off the pictures.






Thursday, August 6, 2009

Finding Little Chief Hare






Little Chief Hare, monarch of the mountains 

I found them in Sierra County.

That's the best I could do with my point-and-shoot camera -- the same one (Sony s600) I use in the camera traps. 

To see how cute they really are check out Bill Schmoker's images here. 
   


Little Chief's rugged domain


My plan was to search for Little Chief Hare by skirting a large talus slide just visible through the red firs on Scenic Route 49. 

The women, and especially the g'daughters  were keen to see the Little Chiefs, but not if it meant climbing a talus slope. 

They had their own plan, so they sent me on my way with a pack lunch and Fred.  

Alder thickets -- potential mountain beaver habitat -- threw me off course before I reached the rocks. 

I took off my glasses and waded into the tangled sticks looking for Aplodontia's nipped twigs and burrows.  


Snow pack had laid the alder stems low, 
and newer shoots tried to correct the course to the sky.

  
The plant community, slope, and soil moisture seemed adequate to support mountain beavers, but there was no sign of them. 

I headed up the hill wondering if talus under the soil prevented their burrowing. 

We were in the middle of the rock slide when I heard the penetrating announcement . . . 

Pip-squeak . . . . pip-squeak . . . . 

Little Chief had us in his sights, and bolted his head forward with each couplet. 

A second Chief protested lustily and disappeared into the rubble as we approached.  

We listened to it sounding its alarm deep beneath our feet.  

Onward and upward.

Fred proved himself a surefooted talus climber, but he was the only black body on the white reflective granite, and the length of his hanging tongue started to worry me. 

He didn't want to drink from my hand. He wanted water as it poured from the bottle's spout. 

My GPS showed Deadman Lake and Peak somewhere above us, and I decided to go for it.


Deadman Lake -- one of the northern Sierra Nevada's glaciated lakes. 


Reaching the lake was kind of a Lewis and Clark moment. 

Fred cooled off, we ate lunch, and I studied my GPS topo to plan the return trip.  


Fred cooling off with bear bell in full view.

So we found Little Chief Hare, navigated to Deadman Lake, and made the return trip down a steep ravine at the east end of the talus. 

The round trip was only 2 miles and a climb of about 800 ft. 

It was a good hike, but I think camera trapping Little Chief will be hard. 

Heat and updrafts will trigger the sensor as soon as the sun hits the rock. I can expect hundreds of pictures of rocks. 

But it's still worth a try -- next year.