The morning of Feb. 2, 2026, started like many others for Pierre Defos du Rau and Julien Birard: It was hot and sunny with a gentle breeze, ideal birding weather. The two French ornithologists, who have been birding since their teens and have traveled the world in search of birds, were at Abou Telfane Game Reserve in central Chad, looking for migratory birds that visit Sahelian wetlands. The duo has surveyed birds in Chad since 2016, they said, keeping detailed records of the winged visitors that fly across the Mediterranean and the Sahara Desert to overwinter in the Sahel every year, and catch any signs of trouble. Birds in the region face many threats: The construction of cities and farms drains their wetland homes; droughts — made more intense and frequent in a warming world — dry up water bodies; and some migratory species are hunted as bushmeat in conflict-prone countries, where food is scarce. Defos du Rau works at the French Biodiversity Agency, while Birard is at the nonprofit Tour du Valat Research Institute. On that early February day, they were joined by Idriss Dapsia and Abakar Saleh Wachoum from the Chadian governmental department for wildlife and protected areas, as part of a collaboration between the two countries for biodiversity monitoring. The team started the day with a plan in mind. “We had set ourselves the (unlikely) goal of searching for the Kordofan rufous sparrow,” Birard said, referring to a species found only in southwestern Sudan and across the…This article was originally published on Mongabay

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