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
Fly Like a Bird in the morning.' I felt like a lot of people may not hear that message and a lot of people need to. It wasn't to be preachy. A lot of times people will hear songs that I write that are not the typical songs people look at as 'Mariah Carey songs.' "Fly Like a Bird" received acclaim from music critics, many of whom praised Carey's gospel-flavored vocal performance, as well as the song's lyrical content. Critic Jim DeRogatis from the "Chicago Sun-Times" called Carey's voice as "one-in-a-million", and wrote "she's never been shy about showing off with frequently annoying octave-spanning