71. further efforts at observation as regards those particular birds. Any other efforts within 100 or 150 yards and some- times 200 yards of such birds will prove futile and as they observe the observer and follow him and warn other birds in some unknown but silent way. The best plan is to move rapidly for a quarter of a mile then recommence moving carefully between long still pauses of listening till an- other bird or birds are located by their rare calls. The birds are generally seen in pairs, occasionally three or four and sometimes larger numbers appear to flock together to feed or rather feed close together, as on alarm these larger parties invariably break up into twos and go off in different directions. Parties or three or four in- variably are family parties, some being juveniles, and such parties are usually composed of 2 adults and 2 juveniles, but in one case I saw 3 adults and 1 juvenile but believe the presence of 1 adult was accidental, and it is uncommon to see 2 adults and 1 juvenile or 1 adult and 2 juveniles. Though I have no actual grounds for saying so I believe this species does not breed till the end of its second year. The immatures after being driven away by the parents, probably shortly before the following mating season, stay together for a time, but later split up and live singly. These single silent birds are often seen and appear absolutely silent and keep strictly to themselves, apparently taking no interest beyond feeding in the world around them, actually appearing to avoid their own species. They spend the greater part of their time perced motionless in a clump or immediately below a thick clump of leaves high (40-60 ft.) in the top of a teak