The cranes leave us... until the next year

His spectacular and noisy edicts had been hoping nervously that finally it should do a good day to be able to be started... That's why, in this one sunny on the hundreds of cranes they have been crossing the skies of the Complutensian one in north direction. From his winter season barracks in Extremadura (principally) they head, like every year in these dates, first towards Gallocanta and later towards his baby's areas in the North of Europe.
Also in this week the flowering of the almond trees has begun, first very timidly (the time does not accompany), but shortly they will begin to adorn our campus with explosive white and pink flowerings.
These are only two of the events unleashed by the progressive increase of the temperatures from the winter colds that we suffer only a few weeks ago, who announces the spring arrival.
But we still lack the most illustrious spring heralds. In the next days we will be attentive at the arrival of the swallows and the planes, which, after having spent the winter in the warm African grounds, come back home to raise the following generation of winged travelers.
All of them are events fenológicos, which recur every year as regards the step of the stations and that now anyone can register to collaborate in his study, thanks to the Network Fenológica of the Spanish Society of Ornithology (SEO/BirdLife). The principal target, in this moment, of the studies fenológicos is to verify if the annual changes in the dates in which they happen all these events are related to the climate change in which we are immersed at present. So this is a good motive for taking part...