Whereas the bulk of the traffic of the pigeons is with the mainland, that of the metallic starlings is purely local, though, perhaps, just as important. The insular communities do not venture for their merchandise across the water, and those of the mainland have no dealings with the isles.
Reference has been made to the disappointment occasioned by the violation of a colony at the instance of a semi-professional egg-snatcher, and of the subsequent abandonment of the tree which had been used as a building site by the birds as far back as the memory of the blacks went.
The tree was in the midst of the forest, and season after season upon the return of the members of the colony they assembled in the vicinity, but never again built in the neighbourhood. Last season, however, the pent-up exasperation of years found a certain sort of relief, for a new colony was started in a Moreton Bay ash-tree not a hundred yards away and in full view from my veranda. There are five other colonies of these socialistic, disputative birds on this Island; but they happen to be in out-of-the-way spots, where continuous detailed observation of their habits and customs would be impossible. Hence, when I saw the noisy throng gather together discussing the imperious business of nesting, I watched with eager and hopeful anticipation. About the third day from the first demonstration in favour of the particular tree building operations began, and thenceforward daily notes were taken of the doings of the colony. Great pleasure was found in being the spectator of the establishment of a new colony.
In 1908 the earliest arrivals appeared, on August 2nd—eight days before the herald of the nutmeg pigeons. The colony the history of which it is proposed to relate was no doubt an offshoot of the first brood of those which had arrived on that date. Circumstances exist which persuade me that the shining Calornis rear two broods during the season. Nutmeg pigeons rear as many as three young successively.
Just about the time the site of the new colony was selected young birds were fairly numerous, so that it seems safe to assume that, expelled from parental nests, they determined to set up an establishment on their own account forthwith. In their industry they seemed to display the defects and advantages of the quality of youth—enthusiasm, impulsiveness and vigour, inexperience, haste, and irrelevance.
Let the diary notes tell of the enterprise as scrutinised through the telescope:
Nov. 15. Shining Calornis (all young birds, mottled grey and black with green sheen on back) busy surveying tree (Moreton Bay ash) on plateau to the north.
16. Birds seem inclined to build.
17. Notice that the birds are in pairs; no old, full-plumaged among them.
18. First beginning of nests. About thirty birds. All seem very excited and full of business.