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Ornamental non-carotenoid red feathers of wild burrowing parrots

机译：野生穴居鹦鹉的观赏性非类胡萝卜素红色羽毛

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Bird plumage colors have the potential to indicate individual quality, condition, health, immunocompe-tence, or the extend of parental care. Color intensity of feathers has been found to correlate with parameters of individual quality, condition, parental care and breeding success. Psittaciformes are well known for their colorful plumage but the significance of parrot coloration is still poorly understood. Red colors are very common in many parrot species. They are produced by at least four non-carotenoid-based pigments (linear polyenal structure). In the present study, we investigated a collection of red abdominal feathers of a marked population of wild Burrowing Parrots Cyanoliseus patagonus in Patagonia, Argentina. The aims of this study were to investigate the ecological significance of the recently described non-carotenoid-based red pigments of Psittaciformes, and the relationships between objectively assessed plumage color and body size, body condition, breeding success and nestling growth in wild Psittaciformes. We found that sexes differed in plumage coloration (sexual dichromatism), that plumage color was a good predictor of female body condition and male size, and we identified the red coloration of the abdominal patch as a signal of individual quality and parental investment.
机译：鸟类羽毛的颜色有可能表明个体的质量，状况，健康状况，免疫能力或父母监护的范围。已发现羽毛的颜色强度与个体质量，状况，育儿照顾和育种成功的参数相关。斜形目动物以其丰富多彩的羽毛而闻名，但鹦鹉着色的重要性仍知之甚少。红色在许多鹦鹉物种中非常常见。它们由至少四种非类胡萝卜素基颜料（线性多烯结构）制成。在本研究中，我们调查了阿根廷巴塔哥尼亚野生挖洞鹦鹉Cyanoliseus patagonus明显种群的红色腹部羽毛的集合。这项研究的目的是调查最近描述的基于非类胡萝卜素的披肩形象的红色素的生态学意义，以及客观评估的羽毛颜色与体形，体况，繁殖成功与野生披头形鸟的雏鸟生长之间的关系。我们发现性别在羽毛着色（性双色性）方面有所不同，羽毛颜色是女性身体状况和男性体型的良好预测指标，并且我们将腹部补丁的红色标识为个人素质和父母投资的信号。

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