Wednesday, October 31, 2012

Green Heron

Here are a few Green Heron photos I found filed in various folders in my computer. The first, taken last May, is from Lake Byllesby in Dakota County; the second is from the University of Minnesota Landscape Arboretum; the third is from the Old Highway 77 Bridge near MSP Airport. The last two photos were taken several years ago.
Green Herons are among the few birds that use tools. They occasionally make fishing lures! They lay bait to attract fish—bread crumbs, mayflies, worms, pieces of sticks, and even feathers. Baiting works best for adults and birds that use live bait (Davis and Kuslan 1994). When not fishing with bait, Green Herons are opportunistic feeders. The previously cited authors list dozens of prey species, ranging from insects, spiders, amphibians and fish. Fish, however, are favored. The authors conclude, "Will exploit a superabundant resource, e.g., grasshoppers in California...and frogs in New York.” Add to that statement, frogs in Minnesota!

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