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
Only Sisters Can Do That vocalist. Originally, the track had been recorded by Ruth Pointer for a solo album that she abandoned in favor of the "Only Sisters" project. Other songs of note include "I Want Fireworks" and "Tell It to My Heart", which were both co-written by Anita Pointer, and the title track, penned by the sisters. The track "Feel For the Physical" appeared on the album "Souled" by Thomas Anders reworked as a duet by the Pointer Sisters and Anders. Despite critical accolades, the album proved to be a commercial disappointment. Only Sisters Can Do That Only Sisters Can Do That is the