A semi-regular description of what’s going on at the drift fences on the Savannah River Site. Most will refer to Rainbow Bay--an isolated wetland completely encircled by a drift fence with pitfall traps. The Rainbow Bay fence has been “run” every day since September of 1978! We'll also talk about all types of fieldwork occurring at the Carolina Bays and other wetlands on site.
"The last word in ignorance is the man who says of an animal or plant: ‘What good is it?’”--Aldo Leopold
“No matter how intently one studies the hundred little dramas of the woods and meadows, one can never learn all the salient facts about any one of them”--Aldo Leopold
Saturday, March 26, 2011
Drift fence predator!
Usually I am very excited to find mammals visiting our drift fences. We frequently deer mice and shrews in our pit fall traps and it's always fun to have something other than the expected amphibian. A few weeks ago we even had a flying squirrel in a bucket. Very cool. I also like finding mammal tracks in the area, having studied gray foxes and fox squirrels for several years I especially like getting to see those, or signs of those. But, unfortunately, the most common mammal experience we have at the drift fence is when we find toads and salamanders that have been killed by raccoons. I love and respect raccoons, but their behavior at the drift fence just drives me nuts. They go from bucket to bucket and bite the heads off of marbled salamanders, but don't eat them--presumably because their skins secretions make them distasteful. Same goes for southern toads, they puncture them and maybe take some eggs out if it's a gravid female, but for the most part they just kill them. I wouldn't mind so much (it is just part of the normalcy of nature) but they just don't seem to learn that they don't like the taste so they just keep killing a few per bucket. So when we find that we have a raccoon "running the fence" we set traps. Got a coon last week, and took some photos when we released it. We just take them away from our sites and let them go in suitable coon habitat. This one was fun to watch, it ran quickly then went right up a tree, almost to the top, and just watched us for a while. Then while leaving that area we came across a bunch of wild pigs so I'll share some photos of those next time.
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