The brown-eared hawk is much smaller than the goshawk. It often hovers in the open areas outside the forest area and on the plains, and sometimes gently flaps its wings. It has sharp vision. Once it finds prey in the forest or on the ground in the air, it will pounce at the speed of an arrow, grab the prey with its claws and take off again, tearing it apart in a secluded place. Its food mainly consists of small birds, frogs, lizards, rodents, large insects and other animal food. But it rarely chases flying forest birds.
The breeding season is from May to July. It nests in trees in the forest, 5-14 meters above the ground. The nest is usually placed on a branch near the trunk. It often builds nests on medium-sized broad-leaved or coniferous trees such as lindens, red pine trees or larch trees, and sometimes uses the nests of magpies and crows. The structure of the nest is extremely rough, mainly made of dead branches of trees. The inner pad is made of leaves and twigs.
Each nest usually lays 3-4 eggs, occasionally as few as 2 and as many as 7, usually 1 egg is laid every 1 day. The eggs are oval or nearly round, the color of the eggs is blue-white, smooth and spotless, the size is 29.8 mm × 38.6 mm, and the weight is 17-18 grams. The female bird is responsible for incubating the eggs, and the incubation period is 33-35 days, and the brooding period is about 30 days. The chicks are late-maturing, and after 24-30 days of nesting, the chicks are able to fly and leave the nest.
Listed in the second level of the "List of National Key Protected Wildlife in China".