3954. Teach singing by separating the bird from the others, so that he may hear no singing, cover his cage for a few days with a thin cloth, then play your flageolet or bird organ several times each day, without harshness. At the end of fifteen days, change the thin cloth for a thick green or red serge, and keep covered till perfect in the air you wish to teach. Feed once a day and night. It is better to teach one good tune well than several imperfectly. The bird will copy all imperfections. Bad or dull singers are improved by hearing the more spirited and perfect.
3955. Surfeit indicated by swelling of lower part of body, and occasioned by too much chickweed, salad, or soft food. Put alum in the water for three or four days, or put a rusty nail in the water, or common salt. Put the bird, if bad, in lukewarm milk a few minutes, then wash with water, wipe and dry gently.
3956. Sick birds may have boiled bread and milk with canary seed boiled in it; lettuce seed; and when moulting, or renewing its feathers, indicated by drooping, putting its head under its wing, dropping small feathers, give nourishing food, as hemp-seed, sponge, biscuit, &c., keep warm and quiet, and keep much in the sun. A cold air or draft is injurious. Put in the water a little refined liquorice.
3957. American Yellow Bird.—Beautiful plumage and fine song. They are hardy, and the cage should be often hung out. Give plenty of water, gravel, rich oily seeds, with occasional sunflower and lettuce seeds; leaves of beet, salad, apples, and other fruits.
Gold Finch.—Treat similar to American yellow bird.