another RFID

["el_supremo01" <>]

Yesterday I went out into the country south of the city with my
daughter and minidisc recorder. When I got home and listened to the
recordings, I heard a sound that I don't recognize. There are also
Franklin's Gulls and Wood Frogs in this audio clip but the unknown
creature makes three croaking(?) sounds at the beginning of the clip
and then two more just before the clip ends. Can anyone identify it
for me? The file is just over 100kB.
http://members.shaw.ca/digipete/050419_uids.mp3

Thanks
Pete
Saskatoon, SK, Canada





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