HERRERA MALIANI , Carlos Manuel

A pesar de lo difundido que se halla el fenómeno de la estacionalidad en las comunidades de aves y su amplio conocimiento, hasta ahora se ha ignorado reiteradamente este hecho a la hora de estudiar las relaciones estructurales en el seno de las comunidades de aves. El presente estudio constituye un intento de análisis estructural de dos...

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Durante su período de invernada en encinares de Sierra Morena (Octubre-Febrero), la dieta del petirrojo (Erithacus rubecula) consiste básicamenre en bellota y hormigas obreras. El porcentaje de bellota por estómago (volumen) oscila entre 16.5 % (Octubre) y 78.4 % (Diciembre), mientras que las hormigas constituyen entre 51 % (Febrero) y 87 %...

127 skins and 59 live specimens of Sturnus unicolor Temm. were studied from several Spanish localities in the hope of detecting differences related to age and sex. Biometric features, plumage pattern and other characteristics were examined with that purpose. The results are as follows: a) The Iberían population of Spotless Starling is quite...

The pelvis of 87 specimens (39 females and 48 males) of Pitymys duodecimcostatus were examined to find morphological and biometrical features allowing the identification and sex determination of remains found in owl pellets. The results obtained were tested by applying them to a sample of 62 pelvis from Barn OwI pellets. Species determination...

The composition of the passerine bird communities inhabiting two southern Spanish habitats was investigated from October to June. The habitats were a "Matorral" stand composed of many scrub species, and a Quercus woodland in which were represented several oak species together with a dense, varied understory ("Umbría"). Linear transects were...