Page:The Zoologist, 4th series, vol 3 (1899).djvu/428

398 Soon it flew up again, and came right down on to the eggs, settling itself in a different position to that at 8.22, the head being turned the other way. The eye, as far as I could see in the waning light, was again shut.

9.3.—The other bird flew up quaw-eeing as before, and, when near, the sitting one churred softly. He settled beside her silently whilst she continued to "churr," lifting up her tail and wagging it from side to side. I had not noticed the tail lifted so high before; it was raised considerably from the ground. In a few seconds the sitting bird flew off, and the other at once moved on to the eggs, but did not get on them properly, and began to pull them about with its beak (always the under part or chin), though not going into the curious attitude of the night before. The bird did not seem able to manage the eggs, and, after sitting hardly a minute on one only, flew off again, leaving them a couple of inches apart instead of side by side, as they had been left by the other.

9.22.—Bird settled on ground in neighbourhood of eggs, churred a little, and then flew away.

9.33.—Bird settled on ground near eggs, and in a second or two flew on to them, and got them together again, I think by stretching out a wing to one of them, and pulling it up to itself, but too dark now to see properly. At any rate, there was no clumsiness or uncouth attitude this time. This bird seemed master of the art of sitting; believe it to be the hen, and that it was the other (the cock bird) that got into difficulties with the eggs last night, and again this, though not to the same extent. If this be so, then the cock Nightjar is only a "'prentice han" at incubation. Had to leave now.

Note.—This same night (at 9.15) had several fine opportunities of watching pairs of birds chasing and playing about with each other high in the air (a beautiful sight), both of them clapping the wings above the back as an essential part of the performance. The clapping of the wings is as characteristic of this bird, as is the churring itself, and as much an expression of feeling between the male and female during the breeding season.