Environmental enrichment influences on body weight, feathering, food condition and behaviour of caged white leghorn hens (1992)

Church, J. S., Tennessen, T., Webster, A. B.

Abstract

Novel objects, providing a diversity of tactile, visual, and auditory stimuli, hung in front of one row of caged within reach of the caged hens, improved foot and feather conditions. Enriched hens were more confident in a novel environment.