I went to collage in mid California.i was at a place in the mountains called "big trees national park"and from there went farther in to a secluded pond named "hells half acre".as I sat there towards sunset,treefrogs started coming out and calling.they were mid sized green ones and they came out by the thousands.im not kidding ,the place was covered,I was actually wiping them off myself.ive never seen anything like it.i had to tiptoe out of there because I'm stepping on them like crazy..