Page 74 - BBC Wildlife Volume 36 #12
P. 74
PHOTO STORY EMPEROR PENGUINS
RIGHT These birds have strong and
sturdy feet, with large, gripping
claws to help propel them across
the ice. To ensure their feet don’t
freeze, the penguins’ blood vessels
are arranged so that there is a
counter-current heat exchange
between warm and cold blood.
BELOW Emperor penguins
and their young, of six to
eight weeks old, at Snow
Hill Island in the Weddell
Sea – the most northerly
colony. The chicks don’t have
the dense feather layers of
adults, but they have downy
insulation, and huddle
together when they need to.
74 BBC Wildlife December 2018
