Bird migration is not limited to birds that can fly. Most species of penguin (Spheniscidae) migrate by swimming. These routes can cover over 1,000 km (620 mi). 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. COUNT 5
QSN1 How do penguins migrate? ANS1 by swimming QSN2 How far do penguins travel when they migrate? ANS2 over 1,000 km QSN3 How do Dusky grouse migrate? ANS3 mostly by walking QSN4 How do Emus migrate long distances during droughts? ANS4 on foot QSN5 Where are Emus from? ANS5 Australia