Aviary rearing is becoming more important as the number of hens in aviary systems is increasing rapidly. With aviary rearing it is important to teach the young birds to jump. Winching the hanging platforms gradually increases difference between the feeding and drinking levels encouraging the birds to jump from one level to another. The plastic Vencoslat gives optimal foot support to the birds and can easily be hinged at the end of the flock to allow easily cleaning the house.