Called also neonate and newborn. premature infant (preterm infant) one born before a gestational age of 37 completed weeks (259 days). The duration of gestation is measured from the first day of the last menstrual period and is expressed in completed days or weeks.
Stress. The second most common reason that parrots pluck their feathers is stress. Parrots can become stressed because of lack of attention from their owners, dirty or cramped accommodations, and boredom.According to veterinarian Ron Hines, Some birds literally groom their feathers off for lack of other pastimes..tress. The second most common reason that parrots pluck their feathers is stress. Parrots can become stressed because of lack of attention from their owners, dirty or cramped accommodations, and boredom. According to veterinarian Ron Hines, Some birds literally groom their feathers off for lack of other pastimes..
Parrots are often called hookbills, which is an avicultural term based on the shape of the beak or bill. This distinguishes parrots from softbills and other birds, such as doves and finches.The function of the parrot beak is for climbing, as well as manipulating and crushing objects.n other birds, the upper beak is fused to the skull and does not move. Under the keratin covering, the beak has an excellent blood supply and a network of nerve endings, which provide parrots an amazing tactile sensory ability. The most sensitive area is at the tip of the upper beak (Figure 4 in slideshow).