This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility: France's heat waves have produced an unusual outcome at a wildlife park, where 10 Nile crocodiles hatched without human assistance for the first time, the director of the reserve said Wednesday. While Nile crocodile eggs naturally incubate in underground nests in the wild, zoos typically hatch them in carefully controlled incubators, closely monitoring temperature and humidity.
"For the first time, we had an incubation that took place entirely under natural conditions," Samuel Martin, director of the reserve in the southeastern town of Pierrelatte, told AFP. La Ferme aux Crocodiles bills itself as Europe's largest wildlife park focused on reptiles. On Saturday, visitors alerted staff after spotting 10 Nile crocodiles hatching without human intervention.
But the excitement shared by visitors and the veterinary team quickly gave way to concern. The "unprecedented natural process" behind the hatchlings' birth is above all "a marker of climate change," Martin said. A Nile crocodile egg must be maintained at a constant temperature of 30°C–32°C (86°F–90°F) for about three months for the embryo to develop and hatch.
France has endured three summer heat waves, with a record 52 days of extreme heat worsened by climate change. The prolonged hot weather created ideal conditions for the subtropical species to reproduce naturally, as the sand retained heat accumulated during the day. All 10 hatchlings are doing well, although they will remain under close observation in the nursery before being presented to the public.
Although species originating from "very hot countries are feeling comfortable," Martin said, "species from more temperate environments may have suffered more." Master's in physics with research experience. Long-time science news enthusiast. Plays key role in Science X's editorial success.
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