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Tracking
Quizzes
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Quiz #37 - Answer
by Walter Muma |
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Photo by Walter Muma |
The answer is ... PROBABLY Great Blue
Heron. But we'll never know for sure, as the tracks are on water! :)
The stuff the bird is walking through is Duckweed, most likely
Lesser Duckweed, Lemna minor.
This photo is not of the quiz area. It's of a Great Blue Heron in
the pond at the rear of my back yard. |
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This was certainly a challenging quiz! Here is the
reasoning behind selecting Great Blue Heron:
- The most likely possibilities are deer or a large strutting bird, or
a frog jumping.
- I think we can rule out a frog jumping right away. The trail goes in
a straight line for a very long way. And besides, there is nothing for
the frog to push off against.
- The tracks are remarkably straight, with one in front of the next in
almost a straight line. This would tend to rule out deer, who have a
wider straddle due to their body width. A large heron-like bird, on the
other hand, has a narrow body and can easily place its feet one in front
of the other in a straight line.
- The water was about 2 feet deep (I actually went back to the exact
spot in the winter to measure the water depth. And yes the water level
was pretty well equal to what it was in the summer.). If a deer walked
through water that was 2 feet deep, it would very likely leave quite a
trail.
- The tracks go out and come back. It is unlikely that a deer would
walk twice across this area. Or that two deer would walk out together,
crossing paths.
- This wetland is surrounded by dry land, so it seems unlikely that a
deer would walk through the water and muck here, and it seems likely
that it would walk around instead.
- The track shape suggests bird feet being lifted up and out of the
water.
- The trail pattern seems to suggest a carefully walking, perhaps
stalking animal of some sort. This fits exactly in with what a Heron
could be doing - stalking for prey.
- As for what kind of Heron-like bird it could be ... in this area it
seems most likely to be a Great Blue Heron, given the geographical area,
the immediate local area, the activity apparently reflected in the trail
pattern, the apparent size of the bird given necessary leg length, and
which species of large Heron-like birds are present in the area. The
last point narrows it down to great Blue Heron and Sandhill Crane. I
suppose it could possibly be a Sandhill Crane, but I have only ever seen
them in much more open areas.
- Great Blue Heron legs measure up to about 3 feet.
- There was no hint of tracks on the land where the tracks apparently
led from and went to. Thus suggesting a lighter animal, such as a bird.
I hope you had as much fun with this as Brian, myself, and tracking
friend Dan did!
--Walter Muma |
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Quiz #37 - Question ...on to
Quiz #38 |
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(All photos on this page are Copyright © by Brian Booth
or Walter Muma unless indicated otherwise)
To send comments, questions or feedback about these quizzes,
email me |
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Tracking Quizzes |
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