There's a Robin extreme left throughout (typical short indecisive phrases), possibly another Robin (or a Wren) giving agitated 'ticks' on the right. A Chaffinch stage right, not yet in full summer song, and I thought possibly a Whitethroat mid-left near the end. I'll let Reinsamba shoot me down in flames.
This one I'll recommend to a friend who took a trip with his bike to the Ucraine from Germany, but had no minidisc-recorder or other equipment to record anything. These samples with sounds and announcements from anywhere in the world are sheer beauty. I'll go and add some stuff I recorded in poor old Germany later this year. If you should stay here at freesounds for the first time, don't forget to bookmark this unbelievable website.
I always record, getting not half the quality of Bram's samples, "metros" in Germany, and if I'll find a sponser I'd add others from around the world :-)). This one is extremely good, from the station, then from inside the train, superb quality. So maybe I won't find some sponsor, but still there is freesound;-)).
Beautiful sound! And the picture is great too. Next time you can save time is you catch the frog and put it for a couple minutes inside a plastic bag along with a few cubes of ice, a trick often done to photograph amphibians and insects (no harm to the animal) :-)