I'm still sleuthing out the origins of the term, as it applies to collared lizards. I just emailed Joseph Collins about it, since the Peterson Field Guide to Reptiles and Amphibians of Eastern and Central North America is one of the sources of the "the noisemaker is a barking frog under the same rock" theory, in which I don't put much stock. I'm hoping he'll have some background on where he heard that rumor.
My position is that the barking frogs can't be the source of any noise attributed to collared lizards since their range is much more southerly than C. collaris. The pioneers of the 19th century embarked mainly from 2 locations: St Louis, Missouri, and Ft Smith, Arkansas. The primary trail I've found that comes into barking frog territory is the Butterfield Overland Trail, which starts in Ft Smith and ends up in SoCal. At any rate, the settlers would encounter collaris along the trails long before they ever got into the range of the frogs.
I've posted some on the subject on my Mountain Boomer Site and will be adding to it as I gather more info.
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Chris McMartin
www.mcmartinville.com
I'm Not a Herpetologist, but I Play One on the Internet

