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1. One of the light, flat growths forming the plumage of birds, consisting of numerous slender, closely arranged parallel barbs forming a vane on either side of a horny, tapering, partly hollow shaft.
2. A feathery tuft or fringe of hair, as on the legs or tail of some dogs.
To grow feathers or become feathered.


any of the flat light waterproof epidermal structures forming the plumage of birds, several types of which form the body covering of birds. The principal types of feather are remex (wing feather); rectrice (tail feather); CONTOUR FEATHER (covering the outside of the bird); DOWN (the soft covering to the body); filoplume (hairlike feathers bearing a few barbs at the apex, occurring between the contour feathers). Feathers consist of a central RACHIS that supports BARBS which, except in down feathers, are connected to form a lamella by means of BARBULES. Feathers are now also known to have occurred in some Theropod DINOSAURS (Coelurosaurs) which have recently been excavated in China, and even Tyrannosaurus may have possessed feathers at some stage in its life cycle.

Patient discussion about feather

Q. can you be allergic to goose feathers?? do you get an allergic reaction even through the pillow cover??? If not- I don't know what it is but something in my bed is giving me a rash...

A. i had a similar problem. i just couldn't sleep in my bed and every day i changed one thing to see what is the cause. then i found that one of the pillows causes it and probably from dust mites. you can easily be allergic to goose feathers that can pass through the pillow cover. all you have to do is replace it and see if something changed.

More discussions about feather
References in periodicals archive ?
Amitriptyline has been used clinically in pet birds to control feather picking, as well as more severe self-mutilation behaviors.
Amitriptyline HC1: clinical study for the treatment of feather picking. Proc Annu Conf Assoc Avian Vet.
Key words: feather picking, feather destruction, behavior, avian, psittacine, bird
Feather picking is a common complaint addressed by avian veterinarians and encountered by pet bird owners and has been reported in 10% to 13% of psittacine birds.
Key words: aggression, feather picking, chronic egg laying, screaming, behavior, birds, avian
Although this is not a miracle product, I have seen decreased incidence of feather picking, plucking, and shredding in birds treated with it.
(11) In poultry and psittacine birds, feather picking because of environmental stressors (boredom, malnutrition, sexual frustration) and disease has been reported.
A diagnostic approach to feather picking. Semin Avian Exotic Pet Med.
Clinical approach to feather picking. Proc Annu Conf Assoc Avian Vet.
Abstract: A 19-month-old sun conure (Aratinga solstitialis) of undetermined sex was examined for feather picking of the cranial ventral thoracic region and a lump on the right shoulder.
A 19-year-old, female, yellow-naped Amazon parrot was presented with a 1-year history of feather picking and an incidental 14-year history of ptyalism.