I think these are very cool looking birds. They are about the size of an American Cardinal and peck the ground like WoodPeckers. When they get into a fight with another bird or want to scare off another bird, they puff up their Crown as shown below in the 3rd picture. They are very common here in Dhahran, Saudi Arabia but not sure about the rest of Saudi. I don't even know if they are found in other countries.
These pictures are from the internet as I wasn't able to get great pictures of birds in person without them flying off!