Thursday, December 10, 2009

Cervical Erosion And Ttc

..¡¡¡ Lugano AGAIN! Owls

Indeed the Lugano are here again.
In the last 5 winters have been allowed to see 4 of them and I believe this is something quite unusual in these latitudes.
I have spent many years observing the migratory behavior of these birds and do not remember anything like it. The raids followed one another more slowly over time (up to 3 years apart.)

Here at banding station Dam (Manises) we banded over 3000 during the last years and this winter in just three days we have ringed over 100 copies which is bringing us valuable information.
That if both last winter and this step is being relatively quiet compared to other years (winters of 05/06 and 07/08) and include the high percentage of recoveries. By the way including a juvenile 3 with Italian forwards. It is fascinating to see how
ringed Lugano in 2005 and subsequent raids that have left do not appear suddenly in the winter of 2009.
These recoveries are produced gradual, and throughout the winter are coming specimens ringed in previous years almost to the beginning of March.
I detailed the last day at the station the day 12.06.2009 Dam:

Lugano (Carduelis spinus) 33 (2 Rec.otros years + 7 controls).
chiffchaff (Phylloscopus collybita) 23
Blackcap (Sylvia atricapilla) 7
Sardinian warbler (Sylvia melanocephala) 2
Robin (Erithacus rubecula) 1
Serin (Serinus Serinus) 10 (2 Rec)

I put 2 photos.


Any doubt about the age?


determine the age of this guy is great for beginners because it illustrates very well the molting process permitendo clearly see the boundaries.



adult male



juvenile male specimen

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