Examples of peck

• Would the organism generalize the pecking behavior in response to a purple key?

• In that research, pigeons pecked response keys in order to obtain food.

• Drinking milk from a bottle where the top had been pecked by a bird was not statistically significant but there were very few subjects exposed.

• However, they continue to discriminate, as shown by pecking at control beads of other colours.

• The other birds get the water, and ever since then the woodpecker has been pecking at things.

• Also, like battery chickens they also have their beaks removed to prevent them bullying and pecking other chickens.

• We suggest that this mechanism may be very important in the ontogeny of the adult pecking response in doves.

• Chickens are pecked by their social superiors in order to maintain a rigid status quo within the flock.

• They suggest that perceptual mechanisms specific to each system develop gradually out of exploratory pecking on the basis of functional experience.

• Frontal threatening starts to occur, and by the age of 3 weeks, pecking and kicking are added to aggressive interactions.

• We have used two approaches to identify the cellular sequelae of pecking the bitter bead.

• At an earlier time the pigeon begins a pattern of behavior, such as rapidly pecking a fixed number of times on a lit button.

• 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.

• Pecks on incorrect keys resulted in a 5-s time-out during which the shutter was closed and key pecks were ineffective.

• The pecking order of free radicals and antioxidants: lipid peroxidation, a-tocopherol and ascorbate.