All those who have attended to the subject, believe that there is the severest rivalry between the males of many species to attract, by singing, the females.
The rock-thrush of Guiana, birds of paradise, and some others, congregate, and successive males display with the most elaborate care, and show off in the best manner, their gorgeous plumage; they likewise perform strange antics before the females, which, standing by as spectators, at last choose the most attractive partner.
Those who have closely attended to birds in confinement well know that they often take individual preferences and dislikes: thus Sir R.

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