Table 1.

Recorded broiler breeder hen behaviors using an ethogram, at 30-s intervals, for 1 h, daily over 2 wk of lay

Behavior category	Observed behaviors
Walking	walking/running
Sitting	sitting still
Standing	standing still
Peck drinker	peck drinker (not drinking)
Foraging	pecking/scratching litter
Comfort	preening, nibbling, stretching, and wing flapping
Peck object	peck object, peck cage (not including drinker)
Aggression	peck another bird/fighting
Other	any other observed behavior