An inflamed oil gland where the lash meets the eyelid.
From the express.co.uk
The smaller-than-a-starling dipper has an oil gland on overdrive, one about 10 times larger than other songbirds'oil gland.
From the thenewstribune.com
The preen oil gland secretions, by which all aquatic birds make their feathers waterproof, support a natural mechanism that concentrates AIVs from water onto birds'bodies.
From the sciencedaily.com
Other possibilities are differences in sweat and oil gland production between men and women, the frequency of moisturizer or cosmetics applications, skin thickness or hormone production.
From the dallasnews.com
And, with each hair is your life time supply of oil from the sebaceous gland right next to it.
From the poseidonsciences.scienceblog.com
The sebaceous cells at the base of the gland starts filling up with oil.
From the poseidonsciences.scienceblog.com
An IU Bloomington researcher collects preen oil from a junco's uropygial gland into a small glass tube.
From the sciencedaily.com
Cockatoos produce preen-oil from a gland on their lower back and apply it by wiping their plumage with their heads or already oiled feathers.
From the en.wikipedia.org
Birds reconnect and slip these back into place by nibbling and running their beak along the length of each feather, also lubricating them with oil from a gland under their tail.