Close up shot of a critically endangered bird species, a Javan pied starling perched on a rock, preening, grooming and cleaning its feathers

javan pied myna starling gracupica jalla species bird sturnidae bali indonesia jalak suren plumage black white collar java critically endangered threaten birdwatching animal wildlife singapore zoo park reserve conservation paradise sanctuary mandai rare extinct southeast asia environment perch stand preen groom feather beak mask red clean habitat trade pet breed extinction