It feeds entirely on shell-fish from the kelp and tidal rocks; hence the beak and head, for the purpose of breaking them, are surprisingly heavy and strong: the head is so strong that I have scarcely been able to fracture it with my geological hammer; and all our sportsmen soon discovered how tenacious these birds were of life.

When in the evening pluming themselves in a flock, they make the same odd mixture of sounds which bull-frogs do within the tropics.
In Tierra del Fuego, as well as in the Falkland Islands, I made many observations on the lower marine animals, but they are of little general interest.

(9/11.

I was surprised to find, on counting the eggs of a large white Doris (this sea-slug was three and a half inches long), how extraordinarily numerous they were.
From two to five eggs (each three-thousandths of an inch in diameter) were contained in spherical little case.

These were arranged two deep in transverse rows forming a ribbon.