FBT colors
Our FBT's now are starting to venture out in the water more now, and very vocal, and noticed that 1 of the 3 is very bright green color and the other 2 are darker.. and here I am again...
Is this uncomen with FBT's ? Wife seem to think maybe it's a different kind of FBT ? or sex wise ? We are hearing 2 distinctive calls so far, witch leads use to believe one of them is a girl..
Can someone help us here please.. any ideas ?
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Jeff 
Looks like a Telefunken U47
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