31. It usually hunts by perching on a branch and waiting for prey to appear. 32. The perching male sits and waits, scanning the sky for any moving object. 33. Nails should be clipped every four months to prevent overgrowth and ensure comfortable perching . 34. They fly rapidly, chasing each other about until returning to their perching spots. 35. The ads show attractive women perching on a motorcycle or vamping in a pool hall. 36. Small perching birds, like songbirds, only spend several seconds asleep at a time. 37. Thin wires prevent birds from perching ( sitting ) on top of the delicate structure. 38. The group has demanded that KFC suppliers add more living space and areas for perching . 39. Behavioural defences include perching and angling the wings to reduce shadow and avoid being conspicuous. 40. Each species has a height range when perching but they perch higher when night approaches.
