This is also known as the Square-tailed Bulbul and Himalayan Black Bulbul in various polytypic forms.
 

This is also known as the Rufous-bellied Bulbul.
 

This species is listed as Near Threatened in the IUCN Red List of Threatened Species (https://www.iucnredlist.org/)

This is also known as the Brown-eared Bulbul.
 

This is also known as the Pale Sand Martin.