Boars may occasionally prey on small vertebrates like newborn deer fawns, leporids and galliform chicks. Occasionally, both golden and bald eagles may capture deer fawns with their talons. The calves are similar to deer fawns, with brown coats and white spots. Females with fawns only form herds during birthing season. When hunting Thomson's gazelles, spotted hyenas usually operate alone, and prey primarily on young fawns. A doe makes maternal grunts when searching for her bedded fawns. However, eight of the surviving deer fawns were released into the wild. Jackals are major predators of fawns. Lynx and golden eagles target fawns. Golden eagles have been reported to prey on fawns and adults. Male fawns tend to be slightly larger and heavier than females. Twins are the rule, although young does often have only single fawns. They give birth twice yearly with one or two fawns. Fawns are born in spring around and weigh around . Gentle fawns gamboled there amidst happy, laughing spirits.