The gular of a raptor is its exterior throat below the chin. Hedgerows are actually rows of hedges. These are rows of bushes and trees that form a dense fence-like structure. An interval is a space between things or a pause. When winter arrives, some animals will migrate to warmer regions or climates.
Some raptors imitate the sound or action of another animal for protection and concealment.
A tone that is without variation in pitch is a monotone sound. It is a bog of Northern North America. In ecological terms, the word niche is the position or function of an organism in a community of plants and animals. For example, an Osprey primarily preys upon fish therefore its niche is near water, and it could not survive in the desert. A nocturnal animal is active at night.