The first one shows males calling and displaying in their rookery. The males raise their heads, flap their wings, and emit raucous calls. Presumably they’re displaying their vigor to onlooking females.
The next two show them walking and hopping, and I could watch penguins walk forever. Note that in the first video a bird stops its perambulations to have a bite of snow.
The background noise in these videos is the wind, which was blowing strongly that day (brrrr. . . . ..).