Wednesday, June 25, 2014

Sedge Wren

I encountered a pair of Sedge Wrens on 22 June 2014 in the Carleton College arboretum. Sedge Wrens are found in the American Upper Midwest and also occurs in Central and South America. I have previously blogged about their curious North American breeding distribution—they have two breeding seasons in this region, one in May and June in the north, and a second in July through September further south.
Sedge Wrens inhabit ephemeral grasslands. Drought and flooding cause these changes. Human created grazing and harvesting add to the transitory nature of Sedge Wren breeding habitat. The result is high mortality and low site tenactiy among the wrens (Herkert et al. 2001).

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