| Download [PDF] | Madrid, 22/09/11 With this new project, which
makes use of the most recent geolocation systems, SEO/BirdLife
and the Fundación Iberdrola intend to gather and publicise more
detailed information about bird migratory movements: for
example, starting and finishing dates, stops along the way,
feeding spots, how long these journeys take, if they migrate in
Spring and again in Autumn, if the routes are the same from one
year to the next, which species are actually sedentary and which
are not. We know that in recent decades, birds have altered
their behaviour in migratory movements. Some species no longer
cross the African continent or travel short distances on a local
scale instead. These changes are thought to be partly due to
climate change, which leads to warmer winters in breeding areas.
There are several different migration strategies, which depend
on the species, the latitude where breeding occurs, the weather
during the year, their historical distribution and many other
factors. Until now,