It is a noisy bird, and a good mimic its calls are very similar to the common starling's, but are louder. Males choose nest sites and try to attract females to them ( Cramp 1998 ), being thus the females who choose the males. Like the common starling, it walks rather than hops, and has a strong direct flight, looking triangular-winged and short-tailed. The spotless starling is a medium-sized, hole-nesting and facultative polygynous passerine ( Veiga et al. Philopatry is remarkable in this species, with more than 90 of the juveniles (both males and females) recruiting within a radius of 500 m from the natal nest (see Methods ). It can also be confused with the common blackbird ''Turdus merula'', which differs most obviously in its longer tail and lack of plumage gloss. The spotless starling is a gregarious species that frequently nests in loose colonies. First, experimental deterioration of female body condition (by means of wing feather removal) negatively affected the intensity of bluegreen egg coloration. Confusion with the common starling is particularly easy during the winter when common starlings are abundant throughout the spotless starling's range, but also in summer where their breeding ranges overlap in northeastern Spain and the far south of France. In this study, we use three different experimental approaches to explore the importance of sexual selection on bluegreen egg coloration of spotless starling ( Sturnus unicolor) eggs. vulgaris ), but has a much more restricted range, confined to the Iberian Peninsula, Northwest Africa, southernmost France, and the islands of Sicily, Corsica and Sardinia. It is closely related to the common starling ( S. Young birds are dull brown, darker than young common starlings, and have a black bill and brown legs. The spotless starling ( Sturnus unicolor) is a passerine bird in the starling family, Sturnidae.
In summer, the bill is yellow with a bluish base in males and a pinkish base in females in winter, it is duller, often blackish. It also differs in having conspicuously longer throat feathers, forming a shaggy "beard" which is particularly obvious when the bird is singing. The breeding season occurs between April and mid-July in Spain.The adult spotless starling is very similar to the common starling, but marginally larger, and has darker, oily-looking black plumage, slightly purple- or green-glossed in bright light, which is entirely spotless in spring and summer, and only with very small pale spots in winter plumage, formed by the pale tips of the feathers. The common starling or European starling (Sturnus vulgaris), also known simply as the starling in Great Britain and Ireland, is a medium-sized passerine bird in the starling family, Sturnidae. Prior to incubation and in order to stimulate the female, the male adds aromatic fresh leaves to the nest as part of courtship displays, while the female adds feathers in response to the male’s display. Like most starlings, the spotless starling is a cavity-nesting species, breeding in tree holes, buildings and in cliff crevices. The spotless starling has a wide range of habitats and can be found in any reasonably open environment, from farmland and olive groves to urban parks and gardens. It is closely related to the common starling (S. It is a noisy bird and a good mimic and its calls are similar to the common starling's, but louder. Here, we tested this hypothesis by experimentally broken faecal sacs and spreading them in nests of spotless starlings Sturnus unicolor, thereby avoiding their removal by adults. The spotless starling (Sturnus unicolor) is a passerine bird in the starling family, Sturnidae. The adult spotless starling is slightly larger than the common starling and has longer throat feathers forming a shaggy "beard" which is particularly obvious when the bird is singing. The spotless starling is closely related to the common starling but has a much smaller range, being confined to the Iberian Peninsula, Northwest Africa, southernmost France, and the islands of Sicily, Corsica and Sardinia. The spotless starling is a passerine bird in the starling family, Sturnidae.
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