Very nice shots!
This spring I participated in the Ontario Frogwatch program sponsored by the Toronto Zoo. It involved 1 night of Frog call training and 3 evenings frogwatching. 1 in April, 1 in May and 1 in June. Lots of fun! There are only 13 native frogs in Ontario. 2 are quite rare and only found on Pelee Island and the north shore of Lake Erie....... so in effect there are only 11 calls to learn. (Simple compared to bird calls!) The frog calls are all very distinct so easy to learn. They also call on a very tight defined timeline through the early spring and early summer when they are looking for a mate. Adds a new dimension to being out there birdwatching when you hear a new frog species! So far my frog life list stands at 7!
Western Chorus frog
Wood frog
Spring peeper
Gray tree frog
American toad
Leopard frog
Green frog
Cheers Terry