During my visit to Australia I had opportunities of observing a number of this species; it is still, however, a rare bird in all our collections, and how far it may range over the Australian continent is not known; the south-eastern are the only portions in which it has yet been discovered; and although all the specimens I have seen in collections were procured at Moreton Bay, I have killed three or four of an evening on the cleared lands on the Upper Hunter, which shows that it is far from being a scarce bird in that part of New South Wales. In all probability it is only a summer visitant in the colony, as it was at this season only that I observed it. In the daytime it sleeps on the ground on some dry knoll or open part of the forest, and as twilight approaches sallies forth to the open glades and small plains or cleared lands in search of insects; its flight, which is much more powerful than that of any other Goatsucker I have seen, enabling it to pass through the air with great rapidity, and to mount up and dart down almost at right angles whenever an insect comes within the range of its eye, which is so large and full that its powers of vision must be very great. Most of those I shot were gorged with insects, principally coleoptera and locusts, some of which were entire and so large as to excite surprise how they could be swallowed; in several instances they were so perfect, that I preserved them as specimens for my entomological collection. Of its nidification I have no information to furnish; it doubtless, however, breeds on the ground, and judging from analogy its eggs will be found to be either one or two in number, and in form and colour partaking of the character of those of _Caprimulgus_, and not of those of _Podargus_ and _Ægotheles_. Contrary to what might have been expected, I found that although the sexes are nearly alike in colour, the females always exceed the males in size and in the brilliance of the tints; the males, on the other hand, have the two white spots on the third and fourth primaries more conspicuous than in the female.