First of all, I want to thank Richard Craik, owner of Vietnam Birding, a company offering services for birders to Vietnam and beyond (website here), who kindly informed me there were a pair of Green Cochoas busily collecting nesting material near a trail at Tam Dao, seen on 2 days the 11 and 12th April – very exciting!
According to Richard, the Cochoas were spending most the time collecting moss from some branches and flying behind the trunk (of the same tree) which is where - he guess - the nest is being built.
Seeing this near-mythical creature was a dream – finally fulfilled. I hope this pair will breed successfully and will not be too sensitive to disturbance by noisy walkers that invade the place each weekend. With the coming of spring and warm weather, their number will increase significantly over the next few weeks.
The brownish wash on wings indicates a female