The Pallas`s grasshopper warbler (Locustella certhiola) is an Old World warbler in the grass warbler genus Locustella. It breeds in east Asia. It is migratory, wintering from India east to Indonesia. This small passerine bird is found in tall grass with some thicker vegetation, usually close to water in bogs or wet meadows. From 4 to 7 eggs are l....