The Spanish Society of Ornithology (SEO/BirdLife) have the documents for to launch a new project for monitoring of birds.
During the winter censuses of wintering birds will be realised. With a monitoring of winter bird populations and their distributions aimed at better conservation and management of bird populations With this control, that is realised during several years, it will be possible to be determined that species are increasing or diminishing their populations, as well as to be determined arrival and leave dates of the birds and if changes in the distribution by the territory take place.
I will try to make the same grids that in the spring censuses, two squares very interesting in winter.
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