Posts Tagged ‘Calf’

Yellowstone Diary: May 17, 2010

The third day of our trip to Yellowstone National Park started with a visit to the West Thumb of Yellowstone Lake.  This area includes West Thumb Geyser Basin, Grant Village, and of course the eponymous extent of Yellowstone Lake.  Although smaller in total area than either the Upper Geyser Basin or the Midway Geyser Basin, West Thumb Geyser Basin boasts a number of excellent thermal features including Abyss Pool and Black Pool on the northern edge of the central basin; Fishing Cone on the Yellow Lake side of the central basin; Seismograph and Bluebell Pools on the southern edge of the basin; and the springs along the center line of the basin including Surging Spring, Percolating Spring, Ephedra Spring and Blue Funnel Spring.  All of these features may be easily visited over short distances along two concentric boardwalk loops.

The image above of Abyss Pool, was recorded at 10:00 MDT on May 17, 2010, using the Nikon D3s and the AF-S NIKKOR 24-70mm f/2.8G ED lens at 24mm.  Exposure was f/16 and 1/30s (+1 EV), ISO 200.  Polarizer used to cut the reflection from the hot spring.  Abyss Pool is a very deep and remarkably beautiful spring, unique even amongst superlative thermal features.

The image above of Fishing Cone Geyser was recorded at 10:26 MDT using the D3s and the 24-70mm standard zoom at  60mm.  Exposure was f/16 and 1/50s (+0.67 EV), ISO 200.  Polarizer.  The origins of the name of this famous thermal feature derive from tales told by mountain men who boasted of a lake in which one could catch a fish, and then immediately dunk it into hot spring, cooking it right on the hook.   As you can plainly see in the image above, Yellowstone Lake was still capped with several inches of slushy ice, and there was only about 20-50 feet of water between shore and the ice.  In spite of the shortage of clear water, what was available was enough to entice otters out for a swim.

In high season the West Thumb area is extremely popular, however this early in the year you will find only minimal services, e.g.,  just gasoline and a small convenience store.

After visiting the West Thumb area, we backtracked northwest along the highway to visit the Midway and Lower Geyser Basin areas.  Although these areas have fewer geysers, the ones that are found here are relatively active.  The springs are the best in the park, and include the singly most beautiful thermal feature found anywhere on the planet, the Grand Prismatic Spring.  Finally, the paint pots found here round out the roster of amazing thermal attributes that exist in this part of the caldera (I’ll try to patch in pics of both the spring and mud pots in future entries)

The image above of Spasm Geyser was recorded at 15:35 MDT using the Nikon D3s and the (new) AF-S NIKKOR 70-200mm f/2.8G ED VR II at 120mm.  Exposure was f/13 and 1/1600s (+0.67 EV), ISO 1600. Polarizer.

We spent the late afternoon along the Madison River, where we were most privileged to observe bison crossing the Madison River in search of the very finest YNP graze.  The image below of the HP confirms that she’s enjoying the awesome opportunity to photograph these grand animals in their natural environment.  Note that the HP is sporting the D300 – shot a bunch of excellent images  too- stay tuned for a guest entry.

Not only do the adult animals wander back and forth across the river at will, but calves also make the excursion.  The crossing of a calf is attended by no fewer than 3-4 cows, who first nose the calf into the water, and then wade across the river on the downstream side, harboring the calf and preventing it from descending too rapidly in the current.  I was completely unprepared for the sophistication with which the bison herds carry out their daily business.  The composite image shown below was recorded at about 18:15 MDT using the D3s and the AF-S VR Zoom- NIKKOR 200-400mm f/4G IF-ED at 400mm.  Exposures were in the neighborhood of f/11 and 1/640s, ISO 3200.  No noise reduction employed in these images.

Copyright 2010 Peter F. Flynn. No usage permitted without prior written consent. All rights reserved.

Yellowstone Diary: May 16, 2010 – Madison River


Each year in Yellowstone National Park and immediate environs, bison execute a cyclical migration between the lower valleys in winter and the high valleys in spring.  Driving eastward from the west entrance from mid-to-late May along the Madison River, you become part of this journey because the Buffalo frequently travel along the same road.  The image above, of two bison cows and their calves (count legs) was recorded at 18:30 MDT on May 16, 2010, using the Nikon D3s and the AF-S VR Zoom-NIKKOR 200-400mm f/4G IF-ED lens at 240mm.  Exposure was f/8.0 and 1/500s, ISO 1600.  Handheld.  Small herds of migrating buffalo will walk on the road surface (Highway 20/191/287,  same highway with various designations)  for significant distances, e.g., up to 0.5 miles, which can block both lanes of traffic for 20 minutes or more.  These animals are the largest terrestrial creatures on the continent (bull bison can weigh over a ton), so it makes sense for them to take the the more efficient  route (road) whenever possible.

The migrating bison superficially appear quite peaceful, but minor confrontations often occur.  The two animals shown above had a disagreement over the ownership of a particularly lush section of graze.  The interloper, left, lost his resolve rather easily.  The image above was recorded at 19:00 MDT, using the D3s and the 200-400mm lens at 400mm.  Exposure was f/8 and /1000s (+0.33 EV), ISO 1600.

The bison cows are remarkably attentive towards the calves, and while cow and calf are never parted for long, the herd also appears to engage in community protective behavior.  The image above was recorded at abut 19:00 MDT using the D3s and the 200-400mm lens at 400mm.  Exposure was f/8 and 1/1000s, ISO 1600.

The calves are normally happy to quietly skittle along beside the herd, but occasionally, without any apparent motivation, they will burst into a fit of rambunctious energy and go tearing around and through the herd.  A calf that has taken up this antic will carry on as such for several minutes.  I suspect that the elder bison find this sort of stuff to be undignified, if not outright annoying, but for the human it is genuinely entertaining.  Image above recorded at 19:00 MDT with photographical parameters as described above.  Cropped.

Of course this entry would not be complete without a close-up cute baby animal photograph.  I hope the image below fits the bill.

Copyright 2010 Peter F. Flynn. No usage permitted without prior written consent. All rights reserved.