The book Bird Behaviour Psychical And Physiological was written by author Frank Finn Here you can read free online of Bird Behaviour Psychical And Physiological book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Bird Behaviour Psychical And Physiological a good or bad book?
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I mention this point because it is commonly supposed that small points not obviously connected with habits, and hence of value in classi- NATURAL INCUBATORS 157 fication, are only to be discovered in bird anatomy, wherqas they occur externally also. The Mound-birds always lay several eggs, and always bury them ; but their procedure in this respect varies : the Maleo simply inters them in beaches of black volcanic sand, and is supposed to deposit them in the hatching-holes at intervals of a fort...night. The Brush-Turkey hens, however, lay every two days, and the species of this family generally scratch up mounds of earth, sand, and dead vegetable matter, that of the Brush-Turkey having a circumference of three dozen yards, with a height of a little over two feet. In this species, as observed in captivity at all events, the male does all the work of preparing the mound and looking after the eggs, when laid and buried, driving the hen or hens off as soon as they have laid, and then covering them deeply or thinly as occasion seems to demand.
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