Well-Nigh Wordless Wednesday: Coming Up For Air

I had my camera at work the other day, taking some photos of the red-headed woodpecker that’s nesting there.  Quitting time came, so I closed up the office and the field station and headed down to the pond for some after-hours photography before heading home.  The light was harsh and very bright, but it highlighted a bunch of animals popping their heads up out of the water all over the pond:

Tadpole surfacing

I thought at first that they were fish, but we don’t have fish in the Prairie Ridge pond.  The only other thing that made sense was that they could be tadpoles coming up for air, but I didn’t know enough about tadpoles to know if this is something they even do.  So I asked one of the Museum’s herpetologists about it and sent him this picture – and I was right!  Tadpoles apparently do this when oxygen levels are low.  If the hundreds of tadpoles I saw were any indication, the oxygen levels in the pond are pretty bad right now…


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