sitting bird left the eggs, uttering the same note, and both flew away together. They were away for nearly twenty minutes, when one of them returned (this time flying right down on to the eggs in silence), and continued to sit silently for an hour or the best part of an hour (it being now too dark to see the time), during all which time I was digging out the sand behind the bush so as to have a better place to sit and watch in. I then went out and brought some branches to make more cover, but in placing these I startled the bird away. Having made a good shelter I left. I imagine that the bird which sat twice for a short time only and churred on the eggs whilst alone was the male, whilst the silent and long-sitting bird was the female.
June 23rd.—Found bird sitting at 3.15 p.m. The Nightjar seems almost as good an example of protective colouring as any insect. It harmonizes to absolute perfection with the sandy ground, dry sticks, and pieces of fir-tree bark, amongst which it so often lays its eggs. My shelter was at some three paces of the bird as it sat, and I could distinctly see the outline of the latter part of its body, and one wing with the tail. Yet, scrutinizing it with the utmost attention for ten minutes or a quarter of an hour at a time, it was only at twenty minutes past four that I finally became convinced it was the bird and not a piece of fir-bark at which I was looking; and this though I knew the eggs to be there, yet could not see them. Stayed till five, during all which time the bird sat in silence.
Returned at 6.10 p.m., and found bird (presumably the same one)[1] still sitting in the same position.
6.25.—A. bird in clump of fir-trees near churred slightly.
8.15.—First flying note of the Nightjar heard as well as the "churr."
8.40.—Sitting bird relieved by her mate. He settled down facing her, and then, as it were, snoozled up to her, churring softly. Whilst doing so he waggled his tail from side to side, as did the other one also in exactly the same way. I believe therefore that both birds churred together, though I could not be quite certain that I heard the two separate notes. The bird I had been watching then flew away with a "quaw-ee," the other one
- ↑ One bird—no doubt the hen—sits on the eggs all day, and does by far the greater part of the night-sitting also.
