Great Myna or White-vented Myna Perched Screaming or Singing on Tree Branch

myna great myna acridotheres grandis bird perched whitevented white vented branch twig one animal black yellow beak bill tropics tree sitting habitat windy wind strong wind swaying rest sit perching closeup close up avian ornithology crest curl backwards feet beak white vent sunlight feather behaviour tropical canopy nature environment wild tree branch wildlife extreme sing screams open beak