SACRE III

As every year I have finalized program SACRE of this season, two squares that I made a route detecting the present birds, to determine throughout the time the variations of the populations.

In square VN4040, with data from 1999, I have located to this season a total of 64 different species.
Altogether, during the 9 years that I take making this grid, I have located a total of 91 species.

Species that have been detected, this year, for the first time, in VN4040.

Hawfinch (Coccothraustes coccothraustes)
Great reed Warbler (Acrocephalus arundinaceus)

In square VN3040, I take to only two years making the census, have located to this season 62 species.
During these two years I have located a total of 71 different species.

So far, it is difficult still to draw conclusions to from a square, although at least, begins to glimpse, as the most abundant birds maintain numbers similar.

Common Cuckoo (Cuculus canorus)
Although the listening places, are well separate, is necessary to have precaution of not entering the same individual two times, Common Cuckoo it is listened to them distance.

Woodpigeon (Columba palumbus)

Wren (Troglodytes troglodytes)
Blackbird (Turdus merula)

Great Tit (Parus major)

Carrion Crow (Corvus corone)

Common Chafinch (Fringilla coelebs)

Red-rumped Swallow

One of the birds that can more represent the climatic change is the Red-rumped Swallow (Hirundo daurica), an African Swallow, who step by step this moving it’s breeding areas more and more to the north, by this is one of the species of recent colonization in the province of Burgos, although certainty of it’s presence in the south of the province, now in patent was had its presence and breeding in the north.
This week I have been able to observe a pair of Red-rumped Swallow who after constructing their characteristic nest have begun to rear, seeing them easily enter and leave it’s nest.