The most remarkable circumstances connected with the economy of this
bird, are the facts of its not hatching its eggs by incubation: the
means resorted to for effecting this object, although in some degree
assimilating to the practice of the Ostrich, is yet upon a totally
different principle. The Wattled Talegalla collects together an immense
heap of decaying vegetable matter as a depositary for the eggs, and
trusts to the heat engendered by the process of decomposition for the
development of the young. The heap employed for this purpose is
collected by the birds during several weeks previous to the period of
laying; it varies in size from two to four cart-loads, and is of a
perfectly pyramidal form. The construction of the mound is not the work
of one pair of birds, but is effected by the united labours of several;
the same site appears to me, from the great size and the entire
decomposition of the lower part, to be resorted to for several years in
succession, the birds adding a fresh supply of materials on each
occasion previous to laying.
The mode in which the materials composing these mounds are accumulated
is equally singular,—the bird never using its bill, but always grasping
a quantity in its foot, throwing it backwards to one common centre, and
thus clearing the surface of the ground for a considerable distance so
completely, that scarcely a leaf or a blade of grass is left. The heap
being accumulated, and time allowed for a sufficient heat to be
engendered, the eggs are deposited, not side by side, as is ordinarily
the case, but planted at the distance of nine or twelve inches from each
other, and buried at nearly an arm’s depth, perfectly upright, with the
large end upwards; they are covered up as they are laid, and allowed to
remain until hatched. I have been credibly informed both by natives and
settlers living near their haunts, that it is not an unusual event to
obtain nearly a bushel of eggs at one time from a single heap; and as
they are delicious eating, they are eagerly sought after. Some of the
natives state that the females are constantly in the neighbourhood of
the heap about the time the young are likely to be hatched, and
frequently uncover and cover them up again, apparently for the purpose
of assisting those that may have appeared; while others have informed me
that the eggs are merely deposited, and the young allowed to force their
way unassisted. In all probability, as Nature has adopted this mode of
reproduction, she has also furnished the tender birds with the power of
sustaining themselves from the earliest period; and the great size of
the egg would equally lead to this conclusion, since in so large a space
it is reasonable to suppose that the bird would be much more developed
than is usually found in eggs of smaller dimensions. In further
confirmation of this point, I may add, that in searching for eggs in one
of the mounds I discovered the remains of a young bird, apparently just
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