Harrier (bird) Harrier (bird) A harrier is any of the several species of diurnal hawks sometimes placed in the Circinae sub-family of the Accipitridae family of birds of prey. Harriers characteristically hunt by flying low over open ground, feeding on small mammals, reptiles, or birds. The young of the species are sometimes referred to as ring-tail harriers. They are distinctive with long wings, a long narrow tail, the slow and low flight over grasslands and skull peculiarities. The harriers are thought to have diversified with the expansion of grasslands and the emergence of C4 grasses about 6 to 8 million years ago
Singing bird box the oval opening. Then it begins to turn from side to side, to flap its wings, move its tail up and down, open and shut its beak and – in some cases – turn its head from side to side, while producing an unbroken stream of birdsong. At the end of the performance the automaton falls back into the box and the lid closes. While the bird is calling, a decorative pierced grille appears with a bird-shaped hole cut into it through which the performer rises and falls. While singing, a bird-shaped piece of grille jumps up to cover the