Their calls (singing) is only to attract females It they continue to keep calling it's because they're still looking. That could be because there's a higher than normal number of male frogs for the female population. In some animals sex of young can be determined by temperature. Don't know if it's true of frogs, but if it is then unusual temperatures my have produced a sex imbalance. Well, that's one idea.

Thanks tropicbreezent! I've had them so long, yet I didn't learn much about them. Sounds like I have too many males! Very interesting. I can't remember what the temps were when they may have been born. But it's something to be aware of early in the season in future years. Would the temp maybe make a difference while they're eggs, or as tadpoles? So I'm thinking this would have played out last year, right? I'm not quite sure how quickly they grow.

I feel sorry for these guys! haha The other night they really started sounding desperate! Thanks again. You're a great resource person!

I couldn't think of any other factors that might lead to a difference in the ratio. I know it happens with crocodiles and turtles, and that amphibians are linked more closely with reptiles than with other vertebrates. With rising global temperatures there's a concern that crocodiles and turtles may end up "unisexual", or at least highly imbalanced. But I haven't found any studies on similar effects on frogs, only on rate of development. None of those went beyond larval stage to maturity where sexing is possible. Where questions do arise about effects on ratio the only answer seems to be "there is no answer".

So for whatever reason, guess you're going to have to get used to summer long frog batchelor parties. Maybe during those sleepless nights you can do a study of them and publish a paper "Temperature effects on frog male/female ratios and resultant sleep deprivation in humans". I'll bet no one else has done that one before, LOL.

LOL....."summer long bachelor parties". Well, I guess they wore themselves out, 'cause last night they didn't make a sound! Maybe they just gave up? Funny this happened the day after they were louder than ever the night before. Maybe they all got laryngitis? :) We'll see if there's any tonight. Their silence does let me able to hear the one green frog we have. He doesn't sound like much of a partier though. haha

Thanks for your info and humor tropicbreezent!

The tree frogs have winded down on their singing. Occasionally I hear one. It does make me sad to think I might have to wait another year to hear them. I'm sure some people are irritated by their singing, but to me, it's like a lullaby while I'm going to sleep. I guess for now, the lullaby will be the crickets, the katydids and the occasional owl.

If you like I could send you some recordings of frog calls to fill in some of those long quiet nights ;-)

LOL Thanks tropicbreezent! I actually have a bunch of audio recordings I made of the tree frogs that I can put on a loop and play. haha That's even better than the white noise machines you can buy.