Monday, January 26, 2009

Track of the Week 17

Setting: Middle of December a couple of years ago, down by the river near Monroe Washington.



1. What gait?

This is a walking gait. Note the even distance between sets of tracks, the relatively wide trail, and relatively short stride.


2. Who?

These are muskrat (Ondatra zibethicus) tracks. Muskrats are the largest members of the vole family. Like other voles it has long narrow toes. Like most rodents it has three closely grouped middle toes on its hind feet with two toes out to the side and four more evenly spread out toes on the front feet.


3. Which feet?

Each set of tracks is a hind/front pair. The hinds show the middle three toes strongly and, on the first two particularly, just barely show the side toes or any heel pad. The front feet are just beyond the hinds so the muskrat was moving in an understep walk.


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Monday, January 19, 2009

Track of the Week 16

Setting:
This was taken last winter at the farm in southern Idaho.



1. Who is headed from bottom to top?

This is a relatively large bird with a game bird style track (with a short hallux and no significant webbing). It is a pheasant. I think chickens have similar tracks, but there aren't any chickens at that farm.


2. Who is headed from left to right?

These smallish, round tracks were made by one of the farm cats.


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Monday, January 05, 2009

Track of the Week 15

Setting: Mid April 2008 Sitka, Alaska. These tracks were moving parallel to the water along the beach.



1. What species?
These are fairly classic mustelid tracks with the 5 bulbous(ish) toes in an arc like that and heel pad with one "wing" larger. Sometimes they look a lot like canine tracks, particularly if the small toe 1 doesn't show up. Based on the size and location we can narrow down to mink (Neovison vison)

2. What Gait?
It is moving in a lope, notice the somewhat larger 1st and 3rd tracks as well as how the 2nd and 4th have more space between the toes and heel pad. This indicates that the feet fall in a front hind front hind pattern.

3. Which feet are which?
As mentioned in the answer to question 2, the feet fall in a front hind front hind pattern. Lefts and rights can be determined by which side of the center line the feet fall, also because the lowest toe is the inner toe - assuming all 5 toes show up, the inner toe is a little difficult to see in the first two tracks.


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