1. Altitudinal migration has also been witnessed in some tropical bat species.2. Dusky grouse " Dendragapus obscurus " perform altitudinal migration mostly by walking. 3. It is apparently a resident bird; there is no indication even for altitudinal migrations . 4. Over 30 % of birds and other species in montane forests show altitudinal migration patterns. 5. Shorter migrations are common, including altitudinal migrations on mountains such as the Andes and Himalayas. 6. Altitudinal migration is common on mountains worldwide, such as in the Himalayas and the Andes.7. Their migratory patterns are sex-biased altitudinal migrations , with females inhabiting lower elevations during reproductive periods. 8. They do not normally migrate other than for local movements, such as altitudinal migrations in the Himalayan species. 9. Endemism, altitudinal migration , and relict populations are some of the natural phenomena to be found on sky islands. 10. The species undertakes some altitudinal migration , moving closer to sea level during the winter over some of its range.
