Spatial distribution and behaviour of laying hens housed in an alternative system

The spatial distribution and behaviour of perchery housed laying hens were compared at a constant stocking density (18.5 birds/m2) in eight pens with colonies of five different sizes (323 birds (N=1), 374 birds (N=2), 431 birds (N=2), 572 birds (N=1) and 912 birds (N=2)). The birds were placed in the perchery when they were 12 […]