0 When a bird pecks, it bites, hits, or picks up something small with its beak: --
2 (of a bird) to hit, bite, or pick up something with the beak --
3 A peck is also a quick kiss: --
Aunt Velma gave me a peck on the cheek.
The pecking order of free radicals and antioxidants: lipid peroxidation, a-tocopherol and ascorbate.
Pecks on incorrect keys resulted in a 5-s time-out during which the shutter was closed and key pecks were ineffective.
Pairings of the keylight with food resulted in the pigeons approaching and pecking the key light rather than going to the food hopper to eat.
At an earlier time the pigeon begins a pattern of behavior, such as rapidly pecking a fixed number of times on a lit button.
We have used two approaches to identify the cellular sequelae of pecking the bitter bead.
Frontal threatening starts to occur, and by the age of 3 weeks, pecking and kicking are added to aggressive interactions.
They suggest that perceptual mechanisms specific to each system develop gradually out of exploratory pecking on the basis of functional experience.
Chickens are pecked by their social superiors in order to maintain a rigid status quo within the flock.
