Sometimes birds show lines of white feathers around the eyes and over the head and these should be selected against as breeders as they are likely to cause white splashing in the plumage. Yellow or greenish bills must likewise be avoided since the first of these is a disqualification. In general this variety in breeding behaves insofar as color is concerned, very much like the Blue Andalusian chicken.[3] The young ducks when hatched are yellow or creamy blue and from blue matings there are also produced black and white ducklings. As in other colored breeds and varieties, the dark pin feathers are somewhat of a disadvantage from a market standpoint.

[3] For a detailed discussion of the behaviour of the Blue Andalusian in breeding, the reader is referred to "The Mating and Breeding of Poultry" by Harry M. Lamon and Rob R. Slocum, published by the Orange Judd Publishing Company, New York City.

The Crested White. Although not so large, this breed is much like the Pekin but with body carried more nearly horizontal and with a crest on the head. The type varies considerably however, the principal selection practiced having been for crest. The plumage is white in color throughout. What is desired in the crest is to have as large a one as possible, round and perfect in form, and set squarely on the head. Not infrequently crooked crests occur and also double or split crests, that is to say, where the crest is parted or divided. In some cases the crests may even come treble, that is, split into three parts. Entire absence of crest is by no means uncommon. In fact, it is considered a pretty good proportion if one half of the ducks hatched have crests although the matings vary considerably in this, occasionally one producing practically 100% of the offspring with crests. Avoid as breeders birds with small crests, lopped crests, split crests or showing an absence of crest. Avoid also breeders showing mottled or green bills in females and black bean in the bill of drakes.

The Buff. In type this breed is similar to the Swedish. As will be seen from the standard weights it is one of the medium sized breeds and makes a very nice market bird as it dresses out into a nice round fat carcass and is a good layer. In color the birds of both sexes should be as uniform a buff as possible except that the head and upper part of the neck in the drake should be seal brown when in full plumage. Color defects which are likely to be encountered and which should be avoided are the tendency for the head of the drake to run to a chestnut color and for his neck to be too light or faded out in color. Sometimes the head of the drake runs too dark in color approaching a greenish black like the head of the Rouen. This is of course undesirable. The wings of both sexes are apt to run to light or even in some cases, pure white flights. Blue wing bars are sometimes shown and these must be carefully avoided. Penciling such as is found in the Fawn and White Runner sometimes occurs and since it is a serious defect must be rigidly guarded against. Any tendency toward a white bib or a white ring around the neck of both sexes must likewise be avoided. Greenish or mottled bills must be avoided in ducks which are to be used as breeders. Not much trouble is experienced in the bill of drakes which as a rule comes good. Any blue cast in the feathers on the rump and back of both sexes must be selected against. As a rule the females of this breed tend to be better colored than the males. At certain periods of the moult the head coloring of the drakes becomes a good buff color and later when the moult is complete, it changes to a copper color. When hatched the ducklings are a creamy yellow.

The Runner. The type of this breed is quite different from that of the other breed of ducks and type is very important. The Runner wants to be decidedly upstanding and to be very reachy. It should have very slim slender lines. The neck should be straight and the head should be carried at right angles to the neck. The bill should be perfectly straight on top and on a line with the skull showing absolutely no tendency to be dished. The legs of this breed are longer than those of other ducks and this accounts for the fact that they run rather than waddle when they move about. It is from this fact that they get their name. They are very active and are troublesome about crawling through fences. They are good layers and non-sitters and they have often been called the Leghorns of the duck family. It must be remembered, however, that while they have the inherent ability to lay as well as hens they will do this only when they receive proper feed and care. It is quite useless to expect a high egg yield from them when they are carelessly fed and improperly housed and cared for. Avoid as breeders ducks of both sexes that are too heavy behind, or in other words, are too heavy-bottomed. Avoid birds which are too short in legs. Avoid crooked or sharp backs. Round heads must likewise be avoided.

The Fawn and White Runner. In this variety the markings must be very distinct and definite. There is a tendency which must be avoided for the head to run to black instead of chestnut, especially in males. It is likewise necessary to avoid females which tend to show penciling on the sides of the breast or on the wing-bows. These defects are apt to be associated with colored flight feathers which is also a defect to be avoided. Guard against too much fawn extending up the neck from the body to the head as the neck should be white in color. Too dark tail coverts approaching a greenish black sometimes occur and are undesirable. In type this variety will not average quite as good as the White.

The White Runner. This variety is best in type and it likewise runs good in color which should be white throughout. Sometimes foreign color will be shown in the back of females and this of course must be avoided. Also avoid birds as breeders with green or mottled bills.