A Malayan night heron perched on tree branch, confronted by a red-bellied squirrel, emitted low croaks and guttural sounds, asserting its presence and warning off the intruder

malayan night heron bird tiger bittern heron night heron gorsachius melanolophus deter vocalize call animal forest daan disturb park natural nature wild wildlife environment perch stand birdwatching species habitat rainforest singapore southeast asia malaysia yunlin garden alert tree branch disturbance canopy behaviour croak sound redbellied squirrel pallass squirrel taipei taiwan territory intruder aware confront interrupt