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Article
Breeding biology of the Roller Coracias garrulus in farming areas of the southwest Iberian Peninsula
J. M. Avilés, Auteur ; J. M. Sanchez, Auteur ; A. Sanchez, Auteur ; D. Parejo, AuteurWe studied the breeding biology of Rollers nesting in nestboxes installed in farming areas of Extremadura (southwest Spain). Laying dates of Rollers in Extremadura are the earliest in the Palearctic region. Clutch size was larger than in norther[...]
Article
D. Parejo, Auteur ; J. M. Sanchez, Auteur ; J. M. Avilés, AuteurThe breeding biology of the Little Egret was studied during two seasons in three inland mixed heronries in the south west of Spain in relation to nest height and density. In addition, we compared the reproductive parameters with those found by o[...]
Article
A. M. Del Viejo, Auteur ; X. Vega, Auteur ; M. A. Gonzalez, Auteur ; J. M. Sanchez, AuteurFrom March to July 2000, four seabird colonies in coastal ecosystems of Sinaloa, northwest Mexico were visited: on islets, a sandy beach and a long-abandoned salt-panning flat. There were partial and total breeding failures, most of them due to [...]
Article
J. M. Avilés, Auteur ; J. M. Sanchez, Auteur ; D. Parejo, AuteurNest-site selection and breeding success was studied in a breeding population of Roller (Coracias garrulus) in the Southwest of Spain. 567 nest-boxes were installed on electric pylons in seven different habitats: fallow land, cereals, helm oaks,[...]
Article
D. G. SanLeon, Auteur ; J. Izco, Auteur ; J. M. Sanchez, AuteurSpartina patens (Gramineae) is an American coastal grass which grows in a wide range of coastal habitats in its native area. After it was discovered in some Galician wetlands two years ago, we undertook a regional survey whose preliminary result[...]
Article
R. Moran-lopez, Auteur ; J. M. Sanchez, Auteur ; E. Costillo, Auteur ; C. Corbacho, Auteur ; A. Villegas, AuteurThe management of the cinereous vulture (Aegypius monachus) populations, the largest bird of the Western Palaearctic and considered an umbrella species, requires the understanding of the factors limiting the breeding success. As part of a manage[...]
Article
J. M. Sanchez, Auteur ; A. M. Del Viejo, Auteur ; C. Corbacho, Auteur ; E. Costillo, Auteur ; C. Fuentes, AuteurGull-billed Tern Gelochelidon nilotica is classed as Endangered in Europe (Tucker and Heath 1994, Hagemeijer and Blair, 1997), but there have been no detailed studies of the trends in the different populations occurring in Europe and Africa. Her[...]
