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American Beaver


American Beaver
Photo Information
Copyright: Rick Price (Adanac) Gold Star Critiquer/Gold Note Writer [C: 1273 W: 1 N: 6188] (21378)
Genre: Animals
Medium: Color
Date Taken: 2005-10-28
Categories: Mammals
Camera: Canon Eos 300D Digital Rebel, Canon 100-400/4.5-5.6L IS
Exposure: f/6.3, 1/320 seconds
More Photo Info: [view]
Photo Version: Original Version
Theme(s): CeltickRanger's favorite wild animal photos [view contributor(s)]
Date Submitted: 2008-12-18 4:50
Viewed: 4186
Points: 26
[Note Guidelines] Photographer's Note
Hi All,
Now this is almost history it's so old, archive images once again sorry folks. This Beaver was captured late in the fall of 2005 in a small pond in the Cypress Hills he had no lodge built but did have a bank burrow and a good supply of food cached. Come spring though we didn't see him again not sure whether he moved on to the creek not far away or he hadn't survived the winter.
Rick

American Beaver
Castor canadensis
>

General Description

By Gustave J. Yaki

The American Beaver, one of two living species (the other is European), is our largest rodent. Their most characteristic feature is their broad, flat, paddle-shaped, scaly tail, often slapped on the water surface as a danger signal. Beavers may grow to 120 cm (roughly 4 feet) in length and weigh up to 45 kg (almost 100 pounds). A much larger Giant Beaver once lived here. It died out about the time that the North America Mammoths, Mastodons, Horses, Camels, Giant Bison, Giant Sloths, American Lion, Sabre-toothed Tigers, Short-faced Bears and several other large life-forms disappeared, about 10,000 years ago.

Beavers and humans have a lot in common. Both build houses (lodges) and dams. However, when humans build dams, we often destroy or degrade the habitat (homes) of most other species, but when beavers do so, most other species benefit. Without beavers, we would have continuous wooded areas; there would be few marshes and swamps, and as a result, few or no freshwater fishes, ducks, muskrats, cattails, arrowheads and hundreds of other species of plants and animals that require water and sunny areas in which to live.

Their dams are constructed on streams, usually in the narrowest and shallowest sections. Beavers may choose these sites in response to the sound of running water for they can also be induced to build at inappropriate places by continuously playing tape-recorded sound of trickling water. Their dam, contructed of fallen timber, branches, other vegetation, rocks and mud and is always well engineered. They seem to inherently know that to successfully resist the pressure of rising water, that the dam must be a shallow U-shape, with the bottom of the U upstream. Perhaps modern human dam engineers first learned this from beavers. Beavers usually build a cone-shaped lodge in the deep pool that they create. This is also made of wood. After a sizeable mound is assembled, sometimes topping two m above the water surface and up to ten m long, an entry tunnel is cut well below the water surface. This leads to a resting platform or den that is chewed out above the high water mark. The stick surface is then plastered with mud, except for a small vent area, allowing for the escape of stale, humid air and the entry of fresh air. The mud-covered surface freezes solid during the winter preventing any predators that travel on the ice to gain access at that time. Occasionally, where there is permanent deep water, rather than build a lodge, some beavers dig a tunnel in a steep bank for their living quarters.

Beavers spend most of the winter months in their lodge, exiting only to retrieve pieces of the stored branches on which to feed. Here they mate, usually in January or February, occasionally later. Four months later, a litter of four kits are born. They grow quickly, and begin to gnaw when still less than a month old. They are weaned at two to three months of age. A second litter is sometimes also produced. The young, which help in dam renewal and construction, and refurbishing the lodge, stay with their parents well into their second summer, after the birth of the new kits, leaving only then to make winter room for the new young In summer, beavers eat a variety of green plants. At the onset of winter, they are provident, planning ahead to be able to eat the bark of poplars, their favourite food trees. They somehow recognize them in the dark of the night (without a flashlight), then cut them down with their chisel-sharp teeth, reducing them into smaller pieces which are dragged or floated to their impounded area and anchored underwater, dining upon them when ice on the surface no longer allows them to come ashore. In cutting these poplars, this allows more sunlight to reach the ground next spring, enabling seedling trees such as White Spruce, which were nursed but shaded by the poplars, to quickly grow, providing food and nesting sites for hundreds of other species.

Beavers front teeth (incisors), grow at a tremendous rate; if kept in captivity and fed only soft vegetable matter, with nothing to chew to wear down those teeth, they curl inwards, puncturing the roof of their mouth, eventually killing them. When not disturbed, beavers prefer to work by day. They are often seen at dusk along the Elbow and Bow Rivers in Calgary. A loud warning splash made by their wide, flat tail is often the first indication that they are moving about.

The American Beavers range covers all of North America from northern Mexico to the limit of trees in the arctic. It is the unofficial mammal symbol of Canada, appearing on the five-cent coin. Canada was first explored by those intent on obtaining their pelts, which led to their near extinction by 1860. The pursuit of their furs eventually led to the opening up of this country for newcomers from Europe and eventually from the rest of the world. Without the beaver, perhaps non-native humans might never have colonized this land.
from Weaselhead.org

xTauruSx, pekkavalo1, eng55, uleko, siggi, jaycee, CeltickRanger, rousettus, Argus has marked this note useful
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Critiques [Translate]

Hello Rick, a wonderful shot of a beaver in swiming with nice composition.
TFS and regards,
Deniz

Hi Rick,
Excellent capture of this Beaver swimming; good low POV, nice composition, sharp fine details, excellent lighting, natural habitat on BG.
TFS
Pekka

  • Great 
  • eng55 Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 1256 W: 42 N: 1976] (5892)
  • [2008-12-18 7:00]

Hi Rick,
Excellent capture.POV,sharpness,details,naturel colors and composition are wonderful.
Thanks for posting.

  • Great 
  • uleko Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3396 W: 172 N: 3310] (10940)
  • [2008-12-18 7:06]

Hello RIck,
How exciting to see a Beaver! This is a classic capture of its way through the weedy water. Excellent focus, great sharpness and fine natural colours.
Many thanks and regards, Ulla

  • Great 
  • siggi Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3097 W: 109 N: 12399] (52850)
  • [2008-12-18 9:40]

Hello Rick
well captured photo. composition, point of view, depth of field and photographer's note are great. thanks for sharing
regards
Siggi

  • Great 
  • jaycee Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2454 W: 10 N: 8044] (25460)
  • [2008-12-18 10:29]

Oh Rick, I just love this beaver!!! What a great shot of him swimming through the water with his eye absolutely shining. The wet coat is wonderful with fine details. An amazing setting and composition.

Jane

hello Rick

excellent close-up shot of the Beaver,
with fine POV, DOF and framing,
excellent sharpness and details,
the catch-light ads a plus to the image, TFS

Asbed

Hello Rick,
great capture of this beaver in his natural surroundings, excellent sharpness, beautiful colors, and nice details in his wet fur.
well done.
Angela

Hello Rick

Excellent sharpness and focus on this fellow's head.
The low POV is very good for this scenario.
Wonderful eye detail.
A lovely natural ,Canadian iconic shot.
TFS

Wolf

  • Great 
  • Rosa Gold Star Critiquer [C: 56 W: 0 N: 0] (0)
  • [2008-12-19 9:26]

Hello Rick,
Outstanding capture at the right momment.
Fantastic.
Have a wonderful day
Rosa

  • Great 
  • joey Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1739 W: 224 N: 6872] (24909)
  • [2008-12-19 14:21]

Hi Rick,
a superb shot of this Beaver!
The composition is great.
Very, very sharp.
Well exposed.
Superb DOF.

Well done,
Joe

Hello Rick,
mammals are not popular here as much as birds and butteflies. But I like it very much, maybe I am a mammalogist:)
your capture great with superb focus and POV/OOF. eyes contact and composition with natural habitat also great. thanks for sharing, have a nice weekend
Ahmet

  • Great 
  • Argus Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5038 W: 260 N: 15594] (50626)
  • [2008-12-20 2:39]

HeLlo Rick,
This may be an oldie from you archives but it is a fine image of a swimming Beaver. The sharpness, low POV and lighting are great to give a fine catchlight in the eye and the composition among the aquatic vegetation pleasing.
Thanks for sharing this delight,
Ivan

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