One Smart Egg: Birds Sense Day Length and Change Development

This is one smart egg. Talk about adjusting your internal clock. New research at North Dakota State University, Fargo, shows that some chicks can sense day length, even while they are still in the egg, which in turn, affects how they develop. Dr. Mark E. Clark, associate professor, and Dr. Wendy Reed, head of biological sciences at NDSU, found in their study that embryos in eggs appear to sense external environments and adjust how they develop. The research is being published in Functional Ecology, a British Ecological Journal, available in early view online.

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