Table 4.

Median percentage of time together inside and outside for all possible pairs of hens during successive 10-day periods.

Treatment	Pen	Period 1	Period 2	Period 3	Period 4	Period 5	Period 6
Enriched	One	53.0	52.0	54.2	53.3	53.2	54.0
Non-enriched	Two	51.6	51.8	53.6	53.4	51.6	52.3
Enriched	Three	53.3	53.9	54.9	54.5	54.8	58.4
Non-enriched	Four	51.4	51.6	52.3	51.6	52.1	55.1
Enriched	Five	55.7	58.3	57.8	60.4	59.5	57.8
Non-enriched	Six	54.4	56.0	57.1	56.4	55.2	54.8