Autumn has definitely arrived when caimans (Caiman croocodilus yacare, Jacaré) show up in huge numbers.
A few weeks ago you would hardly see caimans along the river bank. Late April the waters of the river reced and the sand banks apear; the flooded forest dries out and thousands of caimans come back to the river. No better time to watch them than late afternoon like on this picture below:
And no better image to simbolize the essence of the Pantanal: prey and predator together, still in balance, around the water... And again prey and predator is relative: when young, caimans are killed by jabiru storks, when adults, caimans hunt jabiru storks. So simple.