This shallow river is teaming with life and fish – in the middle of the desert. I wonder how the fish could end up here – are they remnants of the time when the Altiplano was part of the Pacific?

In any case they make up a good portion of the Heron’s diet, and they were plentiful at this river! This one is a dark juvenile.

Thanks to Andrew Whitehouse for identification.

Altitude: 3838 metres.

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