Green frogs are usually hybrids of Pool Frog (Rana Lessonae) and Marsh Frog (Rana ridibunda). The grass green fellows with the pure wite bellows are Pool Frogs, the bigger darker one with the greyish bellows is an hybrid frog.
It was a very good remark. One of the best ways to determine the species is the sound. The video starts with the typical monotonous croaking of the pool frog. When the other frog arrives that is a bit bigger and does not have the yellowish green color (and therefore a hybrid green frog R. Klepton esculenta)of the male pool frog some other sounds are emitted, I think it was the Hybrid frog that uttered the sound, but it could be a response of the pool frog to the presence of the other male.
It was a very good remark. One of the best ways to determine the species is the sound. The video starts with the typical monotonous croaking of the pool frog. When the other frog arrives that is a bit bigger and does not have the yellowish green color (and therefore a hybrid green frog R. Klepton esculenta)of the male pool frog some other sounds are emitted, I think it was the Hybrid frog that uttered the sound, but it could be a response of the pool frog to the presence of the other male.
dino44211 1 year ago