"Early Birds"
نویسندگان
چکیده
منابع مشابه
Early birds
Concern is growing about the impact of climate change on organisms but there's much uncertainty about its effects. A new European study of two bird species does not provide good news.
متن کاملLow ecological disparity in Early Cretaceous birds.
Ecological divergence is thought to be coupled with evolutionary radiations, yet the strength of this coupling is unclear. When birds diversified ecologically has received much less attention than their hotly debated crown divergence time. Here, we quantify how accurately skeletal morphology can predict ecology in living and extinct birds, and show that the earliest known assemblage of birds (=...
متن کاملEarly Bed for Early Birds: Curbing the Evening Calories.
Adolescent obesity remains an area of significant concern across the globe, as are the long-term consequences of adolescent obesity. Recent prospective data from a large cohort of adolescents showed that being obese as an adolescent conferred a strong likelihood of being overweight/obese by the age of 24 years [1]. Even apart from its social and psychological burden, as well as the negative imp...
متن کاملThe Early Evolutionary History of Birds
With more than 10,000 species—roughly twice as many as there are mammals or lizards—birds are by far the most diverse group of living land vertebrates. However, this enormous diversity is just a remnant of an ancient evolutionary radiation that can be traced back to the Jurassic, to the 150 million-year-old Archaeopteryx from southern Germany. Research on the early history of birds and the deve...
متن کاملEarly Development and Epigenetic Programming of Body Functions in Birds
Basic research on early ontogeny of body functions is carried out mainly in domestic bird species. Summarizing the results, it can be concluded that in birds the development of body functions but also of adaptation mechanisms related to changes in incubation environment starts early during the embryonic phase. However, during the final incubation period bird embryos, especially of precocial spe...
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ژورنال
عنوان ژورنال: Emu
سال: 1919
ISSN: 0158-4197
DOI: 10.1071/mu919244g