Pink-necked Green-pigeons (Treron vernans), as with many birds, gather together prior to roosting. But unlike Chestnut-headed Bee-eaters (Merops leschenaultia), Long-tailed Parakeets (Psittacula longicauda) or even Red-whiskered Bulbuls (Pycnonotus jocosus), Pink-necked Green Pigeons gather quietly and in small numbers before flying off to their favourite roosting tree/s.
On the other hand, migratory birds like Purple-backed Starling, also known as Daurian Starling (Sturnus sturninus) gather in larger numbers before flying off noisily to their roosting trees.
The video clip below shows less than a dozen Pink-necked Green-pigeons gathering at the end branches of a tall tree in an urban environment. The green-pigeons indulge in their comfort behavior – preening, courtship, flying from branch to branch, etc. A few may fly off while others fly in. The suddenly, at a signal from one or more individuals, all fly off to the night roost.
YC Wee
Singapore
24th November 2017
