Bird migration evidence. Seabirds fly low over water but gain altitude when crossing land, and the reverse pattern is seen in landbirds. However most bird migration is in the range of . Bird strike aviation records from the United States show most collisions occur below and almost none above . Bird migration is not limited to birds that can fly. Most species of penguin (Spheniscidae) migrate by swimming. These routes can cover over . Dusky grouse "Dendragapus obscurus" perform altitudinal migration mostly by walking. Emus "Dromaius novaehollandiae" in Australia have been observed to undertake long-distance movements on foot during droughts. While participating
Animals That Swim absence; Animals That Swim — the group of beaten-looking thirtysomethings that [Hank] fronts — are the vehicle for his observations, and having enjoyed a penurious existence for eight years, this gig, after a three-year gap, represents a suitably down-at-heel return to public performance. The group's evident poverty is only matched, however, by the richness of their music. The band was inactive from 2001 to 2011, although Snowstorm issued a best of compilation album, "Faded Glamour" in 2004, with sleevenotes by Hugh Barker. In 2007 frontman and lead singer Hank Starrs – now a film producer and writer — made a