Study confirms chicken cognition
From ANIMAL PEOPLE, July/August 2005:
SILSOE, U.K.–Hens pecking buttons to
earn food rewards may have a better awareness of
passing time and be better able to assess the
prospects of future gain than human slot machine
gamblers, a new British study suggests.
Silsoe Research Institute Bio-physics
Group animal welfare scientist Siobhan
Abeyesinghe varied the “payout” for pecking so
that her hens would get only a small amount of
food if they pecked quickly, but would receive a
large amount if they delayed their pecks for 22
seconds, long enough to demonstrate the ability
to mentally clock their own behavior and show
deliberate self-restraint.
Researching poultry welfare since 1996,
Abeyesinghe emphasized the welfare implications
of her findings in describing them for the
journal Animal Behavior.