The carcass of a yacare caiman lies in the dried-up river bed of the Pilcomayo river in Boqueron, Paraguay, August 14, 2016. In Paraguay, alongside the Pilcomayo River, black vultures flew over a shrinking pond where a group of crocodilian reptiles known as yacare caimans sought refuge. Water from the river, which divides Paraguay and Argentina in the area of the Gran Chaco, was scarce. This is not an uncommon sight in the region of General Diaz, about 700 kilometres (435 miles) northwest of the country's capital Asuncion, where the Pilcomayo's waters form lakes and streams that give life to capybaras, birds and caimans. “The river's situation is critical. No water is forecast to enter the basin until December, as happens every year”, said Alcides Gonzalez, a resident of the area. (Photo by Jorge Adorno/Reuters)





A yacare caiman lies in the dried-up river bed of the Pilcomayo river in Boqueron, Paraguay, August 14, 2016. (Photo by Jorge Adorno/Reuters)





Cattle are herded to grounds with water at the Agropil ranch in Boqueron, Paraguay, August 14, 2016. (Photo by Jorge Adorno/Reuters)





A woman bottle feeds a calf whose mother had died, at the Agropil ranch in Boqueron, Paraguay, August 14, 2016. (Photo by Jorge Adorno/Reuters)





Dead yacare caimans are seen in the dried-out river bed of the Pilcomayo river in Boqueron, Paraguay, August 14, 2016. (Photo by Jorge Adorno/Reuters)





A yacare caiman eats beef offal in a pond at the San Jorge ranch in General Diaz, Paraguay, August 14, 2016. (Photo by Jorge Adorno/Reuters)





A volunteer holds a yacare caiman which will be taken with others to an artificial pond in Boqueron, Paraguay, August 14, 2016. (Photo by Jorge Adorno/Reuters)





Dead fish are seen in the dried-up river bed of the Pilcomayo river in Boqueron, Paraguay, August 14, 2016. (Photo by Jorge Adorno/Reuters)





Yacare caimans float in a pond at the San Jorge ranch in General Diaz, Paraguay, August 14, 2016. (Photo by Jorge Adorno/Reuters)





Yacare caimans, alive and dead, lie in the dried-up river bed of the Pilcomayo river at the Agropil ranch in Boqueron, Paraguay, August 14, 2016. (Photo by Jorge Adorno/Reuters)





The carcass of a yacare caiman lies in the dried-up river bed of the Pilcomayo river in Boqueron, Paraguay, August 14, 2016. (Photo by Jorge Adorno/Reuters)