9. Most of the exterior of the nests is now finished. Work continues briskly on the lining, though the material used therefor does not seem to be different from the bulk. When one of a pair has disappeared inside of the tunnel-like entrance, if the other arrives it clings to the threshold until its mate emerges, and then briskly enters. This evening work was suspended at 6.40—cloudy. A few butterflies still flitting about the flowers.
10. Another new nest. As with the others, a few tendrils are laid across dependent sprays of leaves, engaging and intertwining them. These represent the foundations upon which the superstructure is partly built, but both sides and dome are made to entangle other frail branches and leaves, so that the nest is supported throughout its various parts. A considerable quantity of material is lost from each nest, owing to the difficulty of contriving to make initial tendrils engage the leaves and pedicels. The space for the circular entrance is sketched out at quite an early stage. In this colony with few exceptions it faces the south, and is so overhung by a veranda as to be undiscernible except from immediately below.
The situation of the nests on the extremities of the outermost branches, parts of some being lower than the leaves to which they are attached, is no doubt an illustration of acquired sagacity. Such impetuous birds living in large communities, and thus compounding a savour calculated to attract arboreal snakes, would in the course of nature take precautions. The nests in position and design represent the crystallisation of the wit of the bird in antagonism to the wile of the snake.
In the morning, fuss, fierce purpose, and hurry are shown. As the afternoon wears on, less and less industry prevails. Work is suspended at 6.45 p.m. when the last of the crowd hastily departed. Before sundown all are spent and weary. Some of the birds begin to darken on the sides of the upper part of the breasts. The purple sheen on the back of the neck is more brilliant. There is a glowing patch, too, at the base of the tail, though the other parts of the back are dingy with a green tinge in reflected light. The nuptial costume is fast becoming, more attractive.
14. Nests were not deserted until 7.30 p.m. The last half-dozen birds, alert and anxious, dashed off upon a common impulse noisily. They roost in the jungle adjoining.
15. A more sedate condition prevails in the demeanour of the birds, due peradventure to domestic responsibilities. Fewer are about, and they spend leisure moments on the top of or near the nests, while others pop in and out. Are these signs of the beginning of egg-laying?
17. Egg-laying undoubtedly begins, though improvements to nests, which seemed to be finished over a week ago, occupy odd moments.
20. Two past days have been dull and showery. Quietude reigns; a tendril or twig is occasionally threaded or poked into the nests. The male muses on the top of the nest, or closely adjacent thereto. The female pops in and out of apparently cosy quarters. Circumstances point to the conclusion that most of the nests contain eggs.
21. Good deal of rain, which bothers the birds. They play about excitedly in one company. Towards evening very few are about. The nests are deserted, though five or six birds in one mob are in a neighbouring tree.
22. Heavy rain and never-ceasing squalls. No sign of the birds, though a few notes of passers-by were heard. Finer evening.