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 contacted previous acquaintances Andrzej Poznanski and Michal Kosieradzki to build out a new studio with the aim of bring Polish game development to a much wider audience. Chmielarz said that at the time, most games that were being developed in Poland had some success locally, but were not given much attention from the rest of the world, a sentiment shared by many other Polish developers that he talked to. This led towards the studio's name "People Can Fly", to help raise the awareness of Poland's contributions to video games. Chmielarz served as creative lead, while Poznanski was the lead artist