I've been to a few of those lately. One place is a narrow strip along an active railway line just east of Thamesville. A few posts ago I highlighted some of my findings. As I was in the area recently, I decided to check it out again. Not surprisingly, the Ironweed that was dominant and highly attractive to butterflies at my previous visit, was just about finished. But as often happens in the natural world, another species takes its place. This time it was Prairie Thistle (Cirsium discolor).
Prairie Thistle is quite uncommon in Ontario, being ranked as S2. It is a much paler purple than the abundant, and not native, Bull Thistle (Cirsium arvense).
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| Prairie Thistle |
This is another Giant Swallowtail, not quite as tattered as the previous one. During my previous visit I had as many as eight Giants, but there were only about three this time.
There were at least a couple of Great Spangled Fritillaries around.
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| Great Spangled Fritillary |
This next image shows not a butterfly, but a day-flying moth known as a Hummingbird Clearwing. In flight it very much resembled a hummer.
Other winged invertebrates included a few damselflies, such as this Eastern Forktail.
But butterflies were the main attraction, and there were the usual common species, such as Viceroy, Black Swallowtail, Eastern Tiger Swallowtail and this Peck's Skipper on the much darker Bull Thistle.
I also visited a friend's family farm north of Thamesville, where several hectares have been planted into various mixes of prairie grasses and forbs. There was much the same mix of butterflies, but I lucked out and got a couple of rarer ones, such as the not-so-common Common Buckeye....
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| Common Buckeye |
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| Common Checkered Skipper |
Even more recently I have explored some prairie patches and restoration areas in Lambton. I will be highlighting them in a future post.











