well, there are a few reasons frogs like your yard, the biggest is water source, remove the water source and the frogs will go away. second is food source, but I do not know how to remove that without harming the frogs with pesticides or something of the sor

I have noticed that sometimes when one frog stops calling, all the others, even those that are far away stop as well. I believe it is possible that the last trembling half-calls a frog gives before it stops due to "predator" interruption is a sign to all the other frogs to lay low. When that same frog feels the air is clear and starts calling again, thats when the others start up again as well. So not neccassarily an Alpha Frog, but I believe they can recognize the calls (or at least the location) of the same frog that "warned" them of danger. Dave

Sounds like your pond should do just fine with the Bullfrogs there. Just monitor thier populations and if you see an influx of large adults, simply catch them at night by spotlight (they get blinded like deer and freeeze still) and relaese them in a larger waterway. The snakes you were finding are probably Brown Snakes (Storeria Dekayi). Expect that eventually you'll be seeing some Garter and Water Snakes showing up around the pond. Both are harmless. Water Snakes can be fairly large and are banded with brown and tan, garter snakes are striped. The only venomous snake in Maine is the Timber Rattler, and you probably don't ahve to worry about them where you live. The only snakes you have up there are the Eastern Racer (large smooth greyish or bluish above, white or yellow below), Ringneck Snake (small gray snake with bright orange belly and ring around neck), Brown Snake (brown, pink or white belly), Common Garter Snake (striped black snake), Smooth Green Snake (green), Timber Rattlesnake (yes it is venemous, but has a rattle on its tail and is very secretive and rare in human inhabited areas), Northern Water Snake (banded brown snake), Milk Snake (smooth grayish sanke with reddish brown to chocolate blotches down the back and sides, white belly with black markings), Redbelly Snake (small gray or brown with bright red belly), and Eastern Ribbon Snake (like a garter snake, black with yellow stripes but very skinny in appearance). If you scroll down to the 5th section in the link you can see a poster of Maine Snakes. Dave Here is a link that might be useful: Snakes of Maine Poster

Randy... Great pictures! I don't have any Gray Tree Frogs but usually end up with some Green Tree Frogs & little Anoles [green lizard] in the house when I bring plants in. If the freeze warning is just for a night or two I usually just leave them til I put the plants back not knowing if they can survive the cold. Found one Green Tree Frog in the kitchen, one in the bedroom but put them back on the plants til time to go back out... :-)