New research (by the BNHS and others) on Bar-headed Geese based on satellite-tracking shows that the geese display amazing feats while crossing the HImalayas on migration. They can climb many thousand metres in altitude in only a few hours; and do so without the assistance of tailwinds. Wonderful studies like this add greatly our understanding of Bar-headed Goose migration!

Press coverage:
Wise geese chase sinks a myth – Telegraph (Kolkata)
High-flying geese don’t need winds – The Hindu

The original research article:
The trans-Himalayan flights of Bar-headed Geese.