In young birds the gape is very soft and noticeable but in a fledgling it begins to harden somewhat, become less prominent, and--like the bill itself--darken with age. (In some bird species--Purple Finches, for example--the adult retains a yellow gape, albeit smaller and less obvious.)
Psoriatic Arthritis. Psoriasis is a skin disease in which patients have dry, red and scaly skin rashes that can occur on any part of the body. Between 5-20% of patients with psoriasis may develop an associated arthritis. Arthritis means inflamed joint.
A smaller proportion of people also experience arthritis symptoms. Psoriasis may begin with small red bumps that eventually grow into large patches of dry skin that flake off in scales. Patches of affected skin often are symmetrical, meaning that they are present in the same place on both sides of the body. Some areas of the body are more likely to be affected, including the scalp, face, arms, hands, legs, groin, feet, and places where the skin folds.