Recently has been published a new book from David Giralt, a BAC lab’s member, José Luis Rivas (SODEMASA) and Juan Carlos Albero. They have made a description of the situation of the Lesser Grey Shrike (Lanius minor) in Spain.
The Lesser Grey Shrike (Lanius minor) is the Spanish Passerine bird species with the most threatened breeding population. Already the population does not reach even tens of individuals and the habitats, both for feeding and breeding, continue to disappear from some localities and/or are severely threatened. At the present time the risk of extinction is very high and could be imminent. The species is listed as «Critically Endangered», following criteria C2ai and D of the IUCN Red List of Threatened Species
This book describes the results of the census started with the Catalan population in 1999 and in 2002 with the Aragonese, coinciding with the extinction of the population that had existed up to then in Gerona. It shows that the population size in Spain, over the last decade, has fluctuated between 24 breeding pairs, the maximum figure reached between 2002 and 2004, and a single isolated pair, plus some 6-8 solitary individuals, that with complete security can be stated as not having reproduced, localized in 2010.
Finally, it tries to identify the principal factors of this decline and explain some distinct conservation management policies adopted and their results.
For more information:
|Giralt, D., Rivas, J. L. y Albero, J. C. (Eds.) 2010. El alcaudón chico en España. Población reproductora en 2010 y método de censo. SEO/BirdLife. Madrid.|