Common blackbird is a bird of passerine that is distributed by almost everyone, and live in forest or garden areas. The bird has a size long of 24-26 cm and a wingspan of 34-39 cm. It is characterized by a black (males) or dark brown (females) body, and orange (males) or yelow (females) birdmounth. Their diet is varied, they eat insects, earthworms, seeds and fruits.
The reproduction period of Turdus merula L. is the mounths of March to July, the first pass for the proces of reproduction is the coupler, where the male realiced a special movement, he run with a head movement. The female remain motonless until mating. Their could make tow to three placed with tow to six eggs. Although few chicks manage to survive. The incubation period last 12 or 14 days and chicks are in the nest 19 days, approximately.