Vol. XVII 
1900 
Dwicut, Moult of Quatls and Grouse. 45 
the series new. They differ from the juvenal quills in being 
_ edged with pinkish buff; the rectrices, largely grown, are clear 
gray with little or none of the white mottling of the juvenal dress. 
No. 6262, 2, New York, November 4, is at about the same stage 
of development, the tail and chin rather less advanced. It is 
hardly -necessary to cite specifically other specimens, as the 
changes I have indicated are perfectly demonstrated by those 
already referred to by number. . 
first Nuptial Plumage.— This is evidently acquired by a very 
liniited or incomplete prenuptial -moult occurring in May. New 
feathers of the same color and pattern as the old grow upon the 
white chin, including its. black border, and upon the sides of the 
head and the forehead. Birds taken at the right season to show 
this are extremely rare in collections, as it is contrary to law to 
shoot game birds out of season. There are three specimens, how- 
ever (Amer. Mus. Nos. 253876, ¢, and 26493, ?, Pennsylvania, 
May, and No. 55354, ¢, South Carolina, June 4), showing new 
growth, which is doubtless of regular occurrence. 
Second or Adult Winter Plumage, acquired by a complete post- 
nuptial moult chiefly in September. A male in my collection, No. 
2040, Connecticut, Oct. 5, is in nearly full winter plumage, the 
three outer primaries old and worn, the fourth only about one 
half grown, while the rectrices and some feathers of the chin are 
not yet fully developed. 
Second or Adult Nuptial Plumage, acquired by a partial pre- 
nuptial moult, as in the young bird. It is hardly necessary to 
refer to this and later plumages, which are simply repetitions of 
each other, one for summer and one for winter. Wear is not an 
important factor and produces no appreciable effect upon the 
plumage, most of which is worn for an entire year. 
Colinus virginianus floridanus (Cowes). FLORIDA BoB-wHITE. 
The plumages and moults are like those of wérginianus, the 
prenuptial moult occurring somewhat earlier in the season. 
Most of the specimens I have seen are winter birds, taken not 
later than March, before the prenuptial moult would be expected 
to occur. However, a male from Nassau, Bahama Islands (Amer. 
