From 1910:
Carefully separate yolks and whites of 6 fresh eggs; add 6 tablespoons sugar to the beaten yolks, 1 teaspoon salt, 1 teaspoon vanilla, and 1 quart fresh milk. Cook in double boiler. With this custard partly fill individual dessert dishes. When cool place in each 3 “birds”, made as follows:
Whip the whites of the 6 eggs to a stiff froth, sweeten and flavor as desired. One half should be colored with blueberry juice, to represent blue birds; Then beat ½ pint thick cream to a stiff froth; sweeten and color with strawberry juice or extract. We now have red, white, and blue birds on a yellow carpet. If more convenient, it can be made from four colors of ice cream. This will please children and be good enough to eat.