Tawny owl (Strix aluco) and Hume's Tawny owl (Strix butleri) are distinct species: evidence from nucleotide sequences of the cytochrome b gene.

Plumage polymorphism in melanin - based coloration : a case study in the tawny owl Strix aluco

Multiple lines of evidence confirm that Hume's Owl Strix butleri (A. O. Hume, 1878) is two species, with description of an unnamed species (Aves: Non-Passeriformes: Strigidae).

Genetic and morphological analyses revealed that the type specimen of Hume's Owl Strix butleri, the geographical provenance of which is open to doubt, differs significantly from all other specimens previously ascribed to this species. Despite the absence of vocal data definitively linked to the same population as the type specimen, we consider that two species-level taxa are involved, principal...

Relative Effects of Road Risk, Habitat Suitability, and Connectivity on Wildlife Roadkills: The Case of Tawny Owls (Strix aluco)

BACKGROUND Despite its importance for reducing wildlife-vehicle collisions, there is still incomplete understanding of factors responsible for high road mortality. In particular, few empirical studies examined the idea that spatial variation in roadkills is influenced by a complex interplay between road-related factors, and species-specific habitat quality and landscape connectivity. METHODOL...

The mucinous layer covering the corneal endothelium in the owl Strix aluco.

ABELSDORFF and Wessely (1909) reported the curious observation made in connexion with other work, that the aqueous humour of certain owls, Strix aluco (Syrnium aluco, Tawny owl), Athene noctua (Little owl), and Asio otus (Otus vulgaris, Long-eared owl), is slimy and highly viscous and easily spun into threads. On acidification with acetic acid, a ropy precipitate is formed. The part of the aque...

Haemoproteus syrnii in Strix aluco from France: morphology, stages of sporogony in a hippoboscid fly, molecular characterization and discussion on the identification of Haemoproteus species

In France, Haemoproteus syrnii is frequently found in the Tawny Owl, Strix aluco. Additional and complementary features of this species, and in particular the characteristics of volutin, are presented. The authors consider the volutin granules as constant in a given species, and discuss their taxonomic value. These cytoplasmic inclusions appear early during the first stages of development of th...