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June 14, 2007

Cat Bullet

Bison Update

Filed under: Rocky Mountain Arsenal — Cat @ 6:00 am

Well, since I’m sure you were all wondering, I thought that I would give you an update on the Bison out at the Rocky Mountain Arsenal.

If you remember, 16 bison were released at the Arsenal on St. Patrick’s day of this year.

13 females of various ages, and three males.

All have settled in to their new “Roaming” range. One of the bulls has been a loner, typically hanging out by himself, but we are assured that this is natural behavior.

About a month ago, three of the cows had calves, so our herd is up to 19.

Bison calf

Pastoral Scene

I just love how their little bitty horns are growing in. I guess the mothers are greatful that the horns start to grow AFTER the birth process…

Due to the time of day when we normally see them, they are usually laying down, “Bagging some Rays.” But occasionally they are getting lunch:

MMmmmmmm ...  Mother's Milk

Sometimes they hang out with their elders:
Just Hanging with my Peeps

Although the biologists haven’t wanted to tangle with the mommas to find out what the sexes of the babies are, I have clear photographic evidence that at least one of them is a boy:

Its a BOY!

It is hard to believe that this little guy (probably around 60 pounds now) will grow up to be one of these:

Bison Bull

It has been a lot of fun leading tours out to visit the bison. It is gratifying to see the interest that people have in this topic. I’m looking forward to seeing how our herd develops over the upcoming years.

Another Bison Calf

pitter patterpitter patterpitter patterpitter patterpitter patterpitter patterpitter patterpitter patterpitter patter


  1. Awwww! Cute! I have noticed how well nourished your bison are. We just came back from Yellowstone National Park and the bison there have not yet put on weight from the difficult winter. An interesting note, some of last years calves were still nursing from a cow that was about ready to drop this years calf. These cows had definite ribs showing and had very little fat in their hump. The bison at Yellowstone have a difficult life compared to your herd. Some of the newly introduced wolve packs have learned to “harvest” bison. They prefer elk because they are easier, but when hungry, a pack will bring down a bison. Grizzly bears, coyotes and wolves harvest bison calves. Even so, the bison at Yellowstone have become a problem because of over population.

    Comment by Mom — June 14, 2007 @ 7:37 am
  2. Nice pictures. Love the hats, they look so cute on the girls. Thanks for sharing.

    Comment by Leanne Hayes — June 14, 2007 @ 5:31 pm
  3. The babies are so cute! I’m glad your herd is growing. I think my parents may like this kind of tour the next time they come to visit :)

    Comment by Terrie — June 15, 2007 @ 8:57 am
  4. Are you going to knit hats for all of the baby bison? :lol:

    Comment by Dave — June 16, 2007 @ 3:50 pm
  5. Um, OK. I’ll knit them if you volunteer to install them.

    Comment by Cat — June 18, 2007 @ 8:42 am

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