Sexual-selection theory assumes that there are costs associated with ornamental plumage coloration. While pigment-based ornaments have repeatedly been shown to be condition dependent, this has been more difficult to demonstrate for structural colours. We present evidence for condition dependence of both types of plumage colour in nestling blue tits Parus caeruleus.
Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer.
Condition capture models assume that only animals in superior condition can develop and maintain a colorful plumage. Although there is good evidence that carotenoid-based components of plumage colors show condition dependence, the situation is more controversial with the underlying UV-reflecting structural component. We conducted a brood size manipulation in blue tits Parus caeruleus to investigate condition-dependent effects on plumage coloration in male and female offspring.
Therapy depends on the cause. Because gynecomastia has a high rate of spontaneous regression, medical therapies are most effective during the active proliferative phase. To help alleviate the acute embarrassment from the condition adolescent boys may suffer, they should be reassured that the problem will go away.
A lot of things come in matched sets, but breasts aren't usually one of them. Breast asymmetry—when breasts vary in size, shape, or position—is very common. It's considered normal when even fully developed breasts aren't the same size.
The male breast is much smaller than its female counterpart, and it cannot produce milk. Because of this smaller size and simpler structure, breast disease is much less common in men than women. Still, men can develop important breast problems, both benign and malignant.
Lamphrai Srinuan first noticed her chest starting to swell around three years ago, but thought little of it. Lamphrai, who has no children, is now in agony as her ginormous assets cause her chronic shoulder, back and chest pain. In April, her husband Bunleang, 51, took her to the the Buddhachinaraj hospital in Phitsanulok in a desperate bid for answers.
While the term Gynecomastia, in Greek, means "a woman's breast", this condition is, ironically, used to characterize men. Lack of treatment might cause feelings of inadequacy and shame. When testosterone levels rise very rapidly in the body from exogenous injectionsthe body responds by producing enzymes that turn the "extra" testosterone into estrogen by a process called aromatization.
Skip to search form Skip to main content. We studied autumn migrating juvenile Blue Tits Parus caeruleus and investigated whether molting birds showed signs of diseases or. View via Publisher.
Accessory breastsalso known as polymastiasupernumerary breastsor mammae erraticaeis the condition of having an additional breast. Extra breasts may appear with or without nipples or areolae. It is a condition and a form of atavism which is most prevalent in male humans, and often goes untreated as it is mostly harmless. In recent years, many affected women have had a plastic surgery operation to remove the additional breasts, for purely aesthetic reasons.
Fuck this woman is near perfect
she must have been able to smell allh e ate for last to month with a nose like that up his ass my teen boys
its fullof porn