8.) Red-tails are partial migrants. Most that breed in Canada, Alaska, and the northernmost Great Plains will fly south for the winter to other parts of North America. Others throughout the Lower 48 stay put all year. This means that in many parts of the country, Red-tailed Hawks become even more abundant in winter.
9.) Males are territorial and will screech in flight to stake out their space during nesting season. Often they defend a territory of about two square miles from other hawks. But in urban areas, Red-tails are living closer and closer together. In New York City, for example, these birds have been observed nesting mere blocks from each other.
