Showing posts with label Ewe. Show all posts
Showing posts with label Ewe. Show all posts

Monday, May 12, 2014

Observing a Family Group of Desert Bighorn Sheep




Ewes, Lambs and Immature Rams at Walker Lake

Coming across a large band of Desert Bighorn Sheep in early May, 2014 was such a thrill.  I was looking for wildflowers at the base of the canyons to the west of Walker Lake when I noticed a sheep standing watch on one of the protruding rocks.

Bonnie Rannald

 Just as I saw the ewe, she began to make a bleating call.  It is rare for Bighorn sheep to vocalize and they might make a coughing sound if alarmed but this ewe was calling to her lamb.  I quietly switched from my macro to the long Nikon 500mm telephoto lens and then set up my tripod.


Bonnie Rannald

What I had discovered was a family or ewe grouping of females and lambs.  A number of lambs were so small; they were still trying to nurse.


Bonnie Rannald

 Bighorn sheep are seasonal breeders, e.g. they successfully mate only during July through October which allows for birthing at the optimal time of year, when food and water are more plentiful and temperatures are most favorable.  Females usually produce just one lamb per season.


Bonnie Rannald

I settled my heavy tripod on level ground but close to the edge so that I had full range of viewing.  There were so many small groups of ewes and lambs; I could hardly believe what I had wandered on. 


 Some of the ewes were eating mallows and other native plants, with others were lying down in the shade of the rocks to chew their cud.  Bighorns are active and feed during the day.  At night they retire to the same bedding areas that have been used for many years.

Bonnie Rannald

Being a comfortable distance from the sheep allowed me the opportunity to witness the interactions of the lambs and ewes within this large family group.  Suddenly, a very young lamb came to nurse and then walked right over his mother to get in the best position.  Unperturbed, she stayed still and allowed her baby to suckle. 

Bonnie Rannald

Bighorn sheep are very gregarious with a social structure that is matrilineal--based on female associations.  Females remain with their maternal group for life and do not breed until they have reached the second or third year of age.


Bonnie Rannald


Mature males stay in separate ram groups most of the year, but move between ewe groups during the breeding season, from July through October.  Normally, males do not mate until they are at least 7 years old.
Within this family group were a number of immature males and one of the frisky youngsters appeared to be getting some practice at an early age.


Bonnie Rannald


While I was standing back observing the social behavior and clicking away with my camera, two small rams started to approach each other.  What happened next was the best part of the experience, they began to practice their butting skills and continued for me to focus and shoot  8 exposures.


Bonnie Rannald


After several hours, the sheep began to settle in and retire to the shade.  I took this as my cue to quietly make my departure and show my appreciation for being able to observe such a rare opportunity of social interaction with wildlife.  It is always my creed when in the presence of wildlife to never get so close that the animals are aware of me.  Take only photos and leave with just the memories!


Bonnie Rannald






What an exciting and interesting photo-adventure this day has been.  I love it when I am drawn to an area and not knowing what to expect I get treated to new experiences. 

Sign up and follow my blog to see where my next photo-adventure will be!


Photography places me in the moment where I can share that moment in time. It becomes a life story as represented by my interaction with the scene. The happiness and beauty or the sorrow and strife; how I focus leaves a lasting impression that might touch the viewer on a spiritual level.


 "Reflecting Nature's Artistry" 




Many of these images are available on my website:

 http://www.bonnierannald.com/ 

For custom matted and framed images:
Off The Wall


No images on this blog are within Public Domain or are available for free download. 

 All rights reserved, world-wide and images protected by Digital Millennium Copyright Act (DMCA). All photography, graphics, text, design, and content is copyrighted by Bonnie Rannald and should not be copied, down-loaded, transferred and re-created in any way without the express consent, in writing to Bonnie Rannald. For information on Bonnie Rannald licensed, right-managed images, please submit a written request.














Saturday, December 14, 2013

Desert Bighorn Sheep Observations at Walker Lake


Ram Visiting the Ewes


On observing the Desert Bighorn Sheep at Walker Lake, Nevada during the fall of 2013, I noticed a large ram hanging close to the ewes.




Desert Bighorn sheep are gregarious animals with a unique social structure of related ewes banding together most of the time.




 Mature males establish separate bachelor groups in the close general area, except during breeding season when they travel between groups of females. 

The breeding season or "Rut" occurs during the late summer or fall, from July through November.  Dominance in mating is determined by horn and body size.  The mating competition of two rams running together and clashing their horns most often occurs during the pre-rut and along the upper, flat area of the cliffs. 



Both rams and ewes develop horns soon after birth, which continue to grow through-out their 10-20 year life span.




Annual growth rings on the horns indicate the sheep's age. Ram's horns develop much larger than ewes, curling to over three feet and weighing more than 30 pounds, after 8 years of growth.





Both rams and ewes use their horns to break open cactus which is consumed as part of their diet along with native grass and other plants. 
 





As the sun drops at day's end, the dominate male begins his trek almost straight up the steep cliff.   What a thrill it is to watch these sure-footed, agile athletes ascend the rugged terrain with their especially adapted shock absorbing feet.









What an exciting and interesting photo-adventure this day has been.  I love it when I am drawn to an area and not knowing what to expect I get treated to new experiences. 

Sign up and follow my blog to see where my next photo-adventure will be!


Photography places me in the moment where I can share that moment in time. It becomes a life story as represented by my interaction with the scene. The happiness and beauty or the sorrow and strife; how I focus leaves a lasting impression that might touch the viewer on a spiritual level.


 "Reflecting Nature's Artistry" 




Many of these images are available on my website:

 http://www.bonnierannald.com/ 

For custom matted and framed images:
Off The Wall


No images on this blog are within Public Domain or are available for free download. 

 All rights reserved, world-wide and images protected by Digital Millennium Copyright Act (DMCA). All photography, graphics, text, design, and content is copyrighted by Bonnie Rannald and should not be copied, down-loaded, transferred and re-created in any way without the express consent, in writing to Bonnie Rannald. For information on Bonnie Rannald licensed, right-managed images, please submit a written request.














Monday, November 1, 2010

Desert Bighorn Sheep


Nevada's State Symbol


The Desert bighorn sheep, Nevada's official state animal is an amazing creature. Found in the mountainous rocky desert terrain, the Ovis canadensis nelsoni grow to around 4-1/2' tall, and a mature ram can weigh up to 200 pounds.



Both ewes and rams grow horns, but of the two, the rams get much larger, curling to over three feet long with a one foot circumference at the base. The horns are used for fighting and to break open cactus, which is one of their food sources.



A ewe is slightly smaller in size and weight than the ram.




The apricot mallow is a preferred food for the bighorn sheep.




Bighorns will consume native grass and other desert vegetation, which not only sustain the diet, also help to provide essential moisture. Adapting to the desert environment, they can go weeks without water and can survive up to 30% lose of their body weight.
Unique padded hooves enable the bighorns to run up or down rocky cliffs with great speed and agility. Keen eyesight is essential for detecting their predators of cougars, coyotes and bobcats.


At one time the desert bighorns were very plentiful in North America, but now its a big treat just to spot them gathered in their small groups. Most of the decline in their population has been caused from excessive hunting, human encroachment in their habitat and diseases transmitted from domestic livestock.




For additional information:









What an exciting and interesting photo-adventure this day has been.  I love it when I am drawn to an area and not knowing what to expect I get treated to new experiences. 

Sign up and follow my blog to see where my next photo-adventure will be!


Photography places me in the moment where I can share that moment in time. It becomes a life story as represented by my interaction with the scene. The happiness and beauty or the sorrow and strife; how I focus leaves a lasting impression that might touch the viewer on a spiritual level.


 "Reflecting Nature's Artistry" 




Many of these images are available on my website:

 http://www.bonnierannald.com/ 

For custom matted and framed images:
Off The Wall


No images on this blog are within Public Domain or are available for free download. 

 All rights reserved, world-wide and images protected by Digital Millennium Copyright Act (DMCA). All photography, graphics, text, design, and content is copyrighted by Bonnie Rannald and should not be copied, down-loaded, transferred and re-created in any way without the express consent, in writing to Bonnie Rannald. For information on Bonnie Rannald licensed, right-managed images, please submit a written request.