like a young bird. Thrashers have not been known to roost in this particular group of trees before,nor, in fact within 50 or 60 yards of it. Also taking the young birds away from the place and keeping them there is a departure from previous habit. Rhody takes a rat to 1-36. R's ritual strong- ly resembles an expression of gratitude. Rhody behaved as usual, with one exception, and that is, he took the first young rat of the day to nest No.1--36 instead of 5. The second rat went to 5, preceded by the usual formalities. This is an extremely interesting performance, but unfortunately, one which he will not exhibit before persons whom he does not know. I can only show it to others, therefore, through the medium of the motion pictures. If I had not previously observed that it forms an essential portion of his courting behavior and is seen only during the mating season, I might easily have been deceived into the belief that it represents an expression of gratitude for benefits received! It most assuredly looks like one, and a very complete and satisfying one to the donor. Major Brooks' Road-runner Painting in Nat'l. Geog. Mag., June 1936, Vol.LXIX, 6 Critical examination of this illustration gives rise to the following impressions, using Rhody, Archie and Terry as standards of comparison and not presuming to question the accuracy with which the drawing portrays the model used, or, for that matter, road-runners in general. But, in order to avoid circumlocutions and for convenience, those birds will be considered here as faithfully representing the typical road-runner. Allowing for difference in ages, and possibly sex, they are substantially all alike in appearance. 1. The first impression is one of strangeness. Here is a new type of road-runner not seen by me before. A short, heavy bird with something "chickeny" about its head. 2. I see what the chickeny effect is due to: a. The yellow ring about the pupil is too wide and it should be thinner in front than in the rear. It is the eye of a domestic fowl. b. The bill is too short and too slight. c. The crest is too "solid". In reality it is loose and when erected as this one is, the longer feathers do not touch each other at all for perhaps half their length. 3. With the exception of the bare skin back of the eye, the coloring is by far the best I have seen in any portrait of a road-runner. It is amazingly good, especially bearing in mind that the colors seen vary with the angle and the intensity of the illumination and the angle at which the bird is seen, i.e. in the living bird. 4. The skin patch differs in form, extent and color from our assumed typical bird. Our type has a pure white acute isosceles triangle based at the rear of the eye, with blue above and below.(Unless fully displayed, the lower blue does not show). The white triangle merges into the two blues through intermediate [illegible]blue-white, light blue, etc. in our type, and is separated from the red (Scarlet?) by blue-white. The red extends clearly around to the back of the head, and nearly meets its fellow in the living bird and shows plainly from the rear. It also extends downward, so that the shape of the fully displayed patch is roughly like that of a wide carpen-