Abstract
Figure 1 shows the approximate location of these down tracts. While this figure presents the usual arrangement of the neossoptiles, variations do occur. On July 4, one of the nests studied contained one newly-hatched young and three eggs. This young bird was peculiar in that there were no neossoptiles in the femoral tracts. Unfortunately, the nest had been destroyed before my visit on the following day so that I was unable to find out if this peculiarity held true with the other occupants of the nest. While visiting another nest on July 7, which contained three newly-hatched young, I found that neossoptiles were adhering to the barely protruding tips of some of the tertiaries of two of the young birds. These feathers are present for only a short time, since they are pushed out by the underlying juvenal feathers.
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