When Do Hen Harriers Breed?

Hen harriers breed in April-July and during this time males perform sky-dancing displays to attract females. These birds build their nests on the ground or on a mound of dirt or vegetation. Nests are made of sticks and are lined inside with grass and leaves. The female lays 4 to 8 (exceptionally 2 to 10) whitish eggs.

Why do hen harriers nest on the ground?

Hen Harriers are birds of prey that breed in open, upland moors. They nest on the ground, and usually the female sits on the nest to incubate the eggs while the male hunts and returns to the nest with food.

How long do hen harriers live?

Little information is available on longevity in hen harriers. The longest-lived known bird is 16 years and 5 months. However, adults rarely live more than 8 years. Early mortality mainly results from predation.