Exotic tree plantations and avian conservation in northern Iberia: a view from a nest-box monitoring study.

The article discusses a study published in the journal "Animal Biodiversity and Conservation" that evaluated the effects of habitat and vegetation on the disposition of birds, and the differences among environment as a source of food. The researchers discovered birds living in Eucalyptus trees are famished, and recommended that commercial plantations should help change bird inhabitants. An overview of the tree variation and the factor loadings is also presented.