They spread their wings in a posture called a “horaltic pose.” This not only helps to warm them up, but it also helps get rid of parasites accumulating in their feathers. Hawks, too, spend a lot of time aloft so they also will take advantage of the sun’s warmth.Click to see full answer. In this way, why do birds sit on the ground with their wings spread out?The birds invariably adopt a posture in which the body feathers are fluffed up and one or both wings are held out from the body, with feathers spread. It is thought that using the sun in this way does two things. It both helps the preen oil to spread across the feathers and drives parasites out from within the plumage.Subsequently, question is, what does it mean when a bird raises its wings? Wings – Your bird may move his wings to stretch or get exercise, but he also may be telling you something. Wing flapping generally means a bird is either seeking attention or displaying happiness. If your bird is flipping his wings, it often means he is upset by something. Hereof, why does a cormorant spread its wings? But cormorants dive underwater to catch food. They have feathers that become easily waterlogged, which allows them to dive deeper by preventing air bubbles from getting trapped underneath their feathers. This is one reason you often see cormorants standing with their wings spread, drying their wet wings after diving.Why do vultures stand with wings out?Vultures often sit and spread their wings in one spot for hours to sunbathe, surprisingly. The sun helps vultures keep their feathers healthy by causing parasites to converge in areas where birds can more easily get rid of them. On especially chilly days, sunbathing can also help with warming up.