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The picathartes climb the irregular rock walls of the caves they inhabit in order to reach the high ledges on which they rest and nest in the most unimaginable locations The picathartes live exclusively inside caves or very near them. With the south american guacharo and tropical Asia's swiftlets, they constitute the small unorthodox group of caverniculous birds These birds do not confine themselves to the entrance of the caves they live in; they enter far inside, where daylight becomes completely imperceptible The picathartes are active during daylight. In the evening, they retire deep into the caves they live in so as to sleep on the ledges of the cavern walls.

They only live in large caves harboring rivulets that insure a humidity close to 100%. Brosset has observed that these birds drink large amounts of water.; They live on insects (cockroaches) they find in abundance on the bat guano that covers the cavern floors … "