Lactation is a process associated with mammals, yet a number of birds feed their newly hatched young on secretions analogous to the milk of mammals. These secretions are produced from various sections (crop organ, oesophageal lining and proventriculus) of the upper digestive tract and possess similar levels of fat and protein, as well as added carotenoids, antibodies and, in the case of pigeons and doves, epidermal growth factor. Parental care in avian species has been proposed to originate from dinosaurs. Leer más.

Uma estrutura pioneira no Brasil será o novo aliado do trabalho de proteção das espécies de tartarugas de água doce da região Amazônica. Trata-se do Centro de Quelônios da Amazônia, que além de possibilitar a conscientização da população, será marco nas pesquisas comportamentais das espécies em cativeiro. Leer más.

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