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
People Can Fly many former CI Games developers following layoffs at that studio earlier, bringing the total number of people for People Can Fly to about 160, from around 40 in 2015. This accompanied news that People Can Fly was working with Square Enix on a AAA shooter. People Can Fly People Can Fly Sp. z o.o. and for a time known as Epic Games Poland, is a Polish video game developer established in February 2002 by Adrian Chmielarz and based in Warsaw, Poland. Their first video game was "Painkiller". On August 20, 2007, Epic Games acquired a majority share in the company.