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
Big Bird Big Bird Big Bird is the main protagonist of the children's television show "Sesame Street". Officially performed by Caroll Spinney since 1969, he is an eight-foot two-inch (249 cm) tall bright yellow anthropomorphic canary. He can roller skate, ice skate, dance, swim, sing, write poetry, draw, and even ride a unicycle. Despite this wide array of talents, he is prone to frequent misunderstandings, on one occasion even singing the alphabet as one big long word (from the song called "ABC-DEF-GHI," pronounced /æbkədɛfgi:dʒɛkəlmɪnɒpkwɜrstu:vwɪksɪz/), pondering what it could mean. He lives in a large nest behind the 123 Sesame Street brownstone and