5. Before 7 a.m. dismantlement of nests was resumed with enthusiasm and deliberate purpose, shreds being twitched out and cast down. A good deal of chatter. There are a few completely feathered youngsters, the breasts being almost pure white, but not more than one to each nest. Most of the nests have no output, in which case the responsible birds have no assistance in the work of destruction. Late in the afternoon all were very busy again, repairs to nests engaging attention. The birds are so unsettled that I am puzzled. Occasionally one would sit in a semi-dismantled nest snoodling down cosily and peering out with shining eyes, the glow and glitter of which from the darksome entrance have a jewel-like effect. While the one sat close and still the mate would repair the exterior, and in a flash of electric suddenness all would dart out of the tree to swoop about as if to perfect themselves in an exercise designed towards the evasion of the dash of a hawk.
6. Early again the wrecking of the nests began; but was soon abandoned, the colony being deserted for the last part of the day.
7. Demolition very casual. The birds are averse from working in the rain, and, to-day several showers have occurred.
8. Notwithstanding light rain the duty of demolition began at 6.30 a.m. As much energy and purpose are expended withdrawing the strands by a series of tugs as were displayed in the building. Occasionally the whole branch from which the nest is pendant sways with the work of a single bird, the eyes of which glitter the more fiercely as it pulls and jerks at an obstinate strand. Twenty-five birds are counted, so it would seem that the enterprise has failed in respect of increase. No doubt some are absent. Both young and old birds take part in the work of destruction. One, I notice, has a black blotch on his otherwise mottled breast, while his back shines with the polished radiance of a soap-bubble.
9. Tree visited at odd intervals—not at all during early morning. Dismantlement proceeds half-heartedly.
10. Very early, the morning being fine and clear, the birds resumed in a playful, lackadaisical way the demolition of the nests; without apparent cause, save the shriek of a passing cockatoo, they fled into the jungle. Did not see them again until late in the afternoon.
11. Again the birds visited the reserve early. Shortly before sundown I counted sixteen. They were resting silently on the sodden remains of the nests, for there have been heavy showers; some were picking idly at loosened strands as if merely to beguile time. Now and again they fly briskly and noisily in close company—always "diagonalising." Failure to add largely to the population of birds does not seem to have damped the gaiety and impulsiveness of the erratic flights. They are as sprightly in their confabulations and as spiteful in their squabbles. The founders of the colony were, I am convinced, this season's birds. If so they could not have been more than two months old when they began to build. The young brood from old-established colonies hatched out just about two months before these appeared.
12. Yesterday's occupations and recreations repeated. The inheritance of parasitic intruders, to cut off which the nests are torn to pieces, now depends on unsubstantialities.
13. This morning, the flock assembled at break of day, and began, some to extricate tendrils from, others to repair woebegone nests. When the sun shone on the tree the plumage of the birds gleamed with almost dazzling iridescence, the shoulders green, the back of the neck purple and lake of the richest hue.
14. One casual visit to the tree was observed.