Green-winged Cicada Update

by Carl Strang

I have made a correction to yesterday’s post on green-winged cicadas. I always check my posts when I get to work, to make sure nothing is lost in the translation to another computer. In the process of checking links, I went to the Cassin’s 17-year cicada portion of the Michigan cicada website. There I saw something I hadn’t noticed before, mention of “Court II” and “Court III” signals. The Court III signal is produced by a male cicada as he connects with a female for mating.

Cassin’s 17-year cicadas, mating pair

Cassin’s 17-year cicadas, mating pair

When I played the Court III signal recording, it proved to be what I had attributed to green-winged cicadas in 2007. That both corrected my impression of Diceroprocta in DuPage County, and removed any confusion about my observations in 2013.


  1. Hal Atherton said,

    December 17, 2013 at 8:11 am

    Hi Carl, This is off today’s subject. Not far from my home is a farm raising an elk herd. As I drove past the pasture I saw the bull elk laying down and two does were chewing on his antlers. Every once in a while he would move his head slightly in an apparent attempt to get them to stop. They weren’t detered. Quite a bit of antler had been chewed away on both sides. What’s with that??????

    • natureinquiries said,

      December 18, 2013 at 6:52 am

      Hi, Hal,
      Sounds like a mineral deficiency in their diet. Certainly not behavior one would expect from free-living elk.

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