Not all birds build nests, and, of those birds that do ... their eggs directly on the ground if nesting in a cave or on a cliff ledge. When they do build a nest, however, they will create a ...

a small bird native to Southeast Asia. Three times a year, swiftlets build nests out of their sticky saliva on cave walls and cliff sides, where they raise their young. It's the high cost of these ...

People were urged to avoid a car park in Jersey during an operation to remove an Asian hornet nest from a cliff face. Located by volunteers from the Jersey Asian Hornet Group, the nest was located ...

Instead, they're made from the saliva excreted from the glands of the swiftlet, a small Southeast Asia bird that lives in caves or under cliff ledges, where the male swiftlets build their nests.

Male peregrines, which are substantially smaller, will generally catch smaller birds ... The nest, "scrape," is traditionally no more than a depression in a cliff ledge. But nowadays, possibly ...