Hi Juan- I'm enjoying your journal posts immensely. I am especially enjoying comparing & contrasting your experiences with mine in the Arctic Ocean last summer aboard a USCG icebreaker.
The bird you photographed for your 28 Feb post appears to be an Antarctic Petrel. Very nice- I'm envious.
I'm not sure if I could separate the Snow Petrels but it is currently considered one species with two subspecies, one larger & one smaller.
Keep warm, & keep up the great work!
Best- Bill Schmoker, PolarTREC 2010