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A balut is a fertilized bird egg (usually a duck) which is incubated for a period of 14 to 21 days, depending on the local culture, and then steamed. The contents are eaten directly from the shell. Balut that is incubated for longer periods have a well-developed embryo and the features of the duckling are recognizable.
All bird eggs contain the following components: [1] The embryo is the immature developing chick; The amnion is a membrane that initially covers the embryo and eventually fills with amniotic fluid, provides the embryo with protection against shock from movement
Bird eggs are a common food and one of the most versatile ingredients used in cooking. They are important in many branches of the modern food industry. [6] The most commonly used bird eggs are those from the chicken, duck, and goose. Smaller eggs, such as quail eggs, are used occasionally as a gourmet ingredient in Western countries.
The full title text reads: "Egg collecting and bird life of Australia. Catalogue and data of the "Jacksonian oological collection", illustrated with numerous photographs depicting various incidents and items in connection with this interesting study, which has been the life work of the Author."
Published in 1980 by Rigby of Adelaide, South Australia, in its series of field guides to Australian natural history, the book is 190 mm high by 130 mm wide.It consists of three parts; Part One contains general information; Part Two contains separate keys to the identification of nests and eggs, as well as the colour plates that illustrate them; Part Three, comprising three-quarters of the ...
The birds typically breed in spring and summer, but breeding times depends on their location. A hollow space in a tree at a height of 11 m from the ground usually acts as nest for breeding . Generally, three to six white eggs are laid per season, the eggs being 31 mm in length. The female incubates while the male searches for food.