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
Not Only But Always Not Only But Always Not Only But Always is a British TV movie, originally screened on the Channel 4 network in the UK on 30 December 2004. Written and directed by playwright Terry Johnson, the film tells the story of the working and personal relationship between the comedians Peter Cook and Dudley Moore, a hugely popular duo in the UK during the 1960s and 1970s. Focusing primarily on Cook, the film traces the pair from their first meeting through their career as part of the "Beyond the Fringe" review, their television series "Not Only... But Also" (from which the film