Today, Nannothemis and I did another dragonfly survey at Humbug Marsh of the
Detroit River International Wildlife Refuge near Trenton, Michigan.
The Common Green Darner (
Anax junius) swarm was spectacular with 100's in the air at any point in time. There were also a couple other species flying with them such as Wandering Glider (
Pantela flavascens) and Black Saddlebags (
Tramea lacerata).
We found a few Shadow Darners (
Aeshna umbrosa), doing what they do in the shadows.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWKxMCBM4BHBjUx5nAvBK4EEeep9yTU_jL09WZQUO9Em0BDDp7jeziG63xGOYS5K6lAeCU9hrXYYqpsCdA6GnhBrzT8d3jU8NF6opFueC6yJfFUfCtbCd6lqiR_swyH20EmRMfaQ/s320/2771612021_807a108eca.jpg)
However, the highlight of the afternoon was the number of Russet-tipped Clubtails (
Stylurus plagiatus). During a one-hour survey in the vicinity of the Detroit River, 91 individuals were found perched on the various woody plants, mountain mint, and this Cottonwood.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhKADPTG48kPIr-dyfPPl_M4__GXjjIJTHChMvZHKK7lvSVI8-X-vMJ973trMlpj8Tc9V1XJjBG75hcUuwFhc5ahd_Ev9Jnu6pjTUEzqhNo00Q1u_0E0iPQRGxvFgHpPBYfFqEjlA/s320/2772453216_a1ed8a1e3e.jpg)
This is the largest population of this species that we've found and Nannothemis has posted a request for any information of other populations in the latest
Williamsonia (newsletter of the Michigan Odonata Survey).
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