Evolutionary demography and conservation lab - Labo de démographie évolutive et conservation |
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Some sheep, goat and field stories from our projects
The life and death of Ram 745 745 was born in 1995 from a year old ewe (867). He had a quite successful life, becoming alpha-ram at 7 years-old. He gained his title by wining a fight over 218 (a 12 year-old ram of 136 kg) and he remained the alpha male over the following year (2003). In the 2003 fall, 745 was a heavy ram weighing 144 kg, almost 10 kg bigger than the males against which he competed for the title in the previous year. He was killed by a cougar in the winter of 2004 and we found him dead. The horn measurements taken after his death revealed that he managed to grow horns over a meter long (right horn: 104 cm and left horn 106 cm) and of 40 cm of diameter. >>> |
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745 in 2002 7yrs old. |
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867, 745 mother. The photo was taken in 2002 when she was 12 year-old. |
218, in 2003 The photo was taken in the year he was out competed by 745. |
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The oldest sheep: 967 a female
born in 1982, is the oldest sheep we have monitored at Sheep River. She
was 18 years old when she died of unknown causes in the winter of 2001.
During her life, she produced 8 offspring that survived to weaning and
5 of them survived to one year of age. |
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The best mum:
>>> |
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The biggest sheep:
<<< 706 in the fall he
was 154kg |
190 in fall 2002. | |||||||||||||||||||||
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Nanny 243 This female broke her left horn in a trap in early June 2001 as a 2 year-old. Nevertheless, she managed to be the heaviest female ever weighed at Caw Ridge. She was 95.2 kg on 28 July 2005, at 6 years old.
243 with her kid in November 2006 >>> |
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Male success Male reproductive success is highly variable. Males use their powerful horns and size to fight for females during the rut. Interestingly, two of the most productive males not only scored with female goats, but they managed to gore us during captures! <<<232 on the left here and 122 |
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Marmot warriors Although grizzly bears are of greatest concern for personal safety, the greatest material damage is definitely inflicted by hoary marmots, who gnaw everything imbibed with perspiration: the seats and handles of ATVs, the inside of helmets, backpacks, coolers, and so on. Here is pink-pink, a marked marmot that was chewing on the ATV’s seat a few seconds earlier. >>> |
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More room please! Over the years,
more and more people came to work at Caw Ridge. In 2004, we decided to
enlarge the cabin. In September, we took materials on the mountain with
ATVs and small unstable trailers. We were then stuck in a snowstorm for
3 days. We therefore had to build the extension in the snow and to shovel
the snow outside the camp! |
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