yellow bittern - ixobrychus sinensis small bittern. it is of old world origins, breeding in the northern indian subcontinent,

zoology yellow bittern wing wildlife wild wetland tropical thailand southern south singapore sinensis rainforest protection pond plumage perched peninsula park ornithology nature natural national malaysian malaysia little juvenile ixobrychus heron grey green female feather fauna exotic eurasia colour brown birdwatching birds birding bird beak avian asian asia ardeidae animal