Commercial duck farming, opportunity for, 4 distribution of, 42 Condition of breeding geese, 169 ducks ready to kill, 96 geese for fattening, 200 geese ready to kill, 206 Conditioning exhibition ducks, 38 Conditions for duck raising on the farm, 120 Confining goslings to yards, 181 Considerations, general, in making duck matings, 18-21 goose matings, 154 Consistency of feed for ducks, 65, 126, 133 fattening geese, 205 Construction of brooder houses for ducks, 82 Cooking geese to overcome greasiness, 194 Cooling duck carcasses, 108 eggs during incubation, 75, 131 Cooling goose carcasses, 207, 211 eggs during incubation, 175 Coop, growing, for goslings, 182 Cooperative feed buying, 101 marketing, 110 Copper colored head of Buff drakes, 36 Cost of picking ducks, 107 geese, 207 Creaminess in plumage of Aylesbury, 23 Pekin, 23 Crest, tendency toward, in the Pekin, 22 of Muscovy, 29 of Crested White, 34 Crested White duck, 34 Crippled ducks, 97, 104 Critical period with young ducks, 98 Crooked back in ducks, 19 in Runner ducks, 37 Crooked crest in Crested White, 34 Crooked tail in ducks, 19 Crossed feathers on neck of Pekin drake, 22 Crossing African and Brown Chinese geese, 157 Curing duck feathers, 117 goose feathers, 211, 213 D Darkening pens for fattening geese, 195 for noodling geese, 196 Dewlap in Toulouse geese, 155 African geese, 157 Diarrhoea of ducklings, 99 of goslings, 185 Diseases of ducklings, 98-100 of goslings, 185 of mature ducks, 69 prevention of, 98 Dished bill in Rouen, 24 Distinguishing sex in ducks, 13, 135 in geese, 165 young from old ducks, 55 Distribution of duck raising, 3 Dogs a source of loss in ducks, 69 Double crest in Crested White ducks, 34 Down, removing, from market ducks, 108 from market geese, 207, 210 Drake, definition of, 12 adult, meaning of, 13 young, meaning of, 13 Drakerel, definition of, 13 Drinking dishes for ducklings, 86 for goslings, 183 Driving geese from railway to farm, 202 Drowning ducks, 31, 128, 135 Dry, keeping goslings, 181 Dry land duck farms, 44 Dry picking ducks, 107 geese, 206 Duck, definition of, 12 adult, meaning of, 13 young, meaning of, 13 Duck raising as a side line, 120 distribution of, 3 for egg production, 5 for ornamental purposes, 7 kinds of, 4 on the general farm, 5 opportunities for, 4, 120 Ducklet, definition of, 13 Duckling, meaning of, 12 Ducks, number of, in leading states, 3 in U. S., 3 value of, in U. S., 3 Dun colored ducks from Colored Muscovy, 32 E Egg class of ducks, 11 Egg production, duck raising for, 5 of breeds of ducks, 15 of breeds of geese, 150 of Pekins on commercial plants, 66 selection of breeders for, 21