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  1. Many species of birds and mammals reproduce better in the wild than in captivity. When wild populations are threatened, it is of utmost importance to conservation that captive populations are healthy and sustainable. In a new paper, wildlife biologists Werner Kaumanns (LTM-Research and Conservation), Nilofer Begum (Freie Universität Berlin) and Heribert Hofer (Leibniz Institute for Zoo and Wildlife Research) evaluate decades of scientific literature on the reproduction of captive populations and compared two well-known population management paradigms.

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  2. Feathers are amazing evolutionary innovations that allowed birds to conquer the sky. A study led by Matthew Towers (University of Sheffield, UK) and Marian Ros (University of Cantabria, Spain) and published in the journal Development now reveals that flight feather identity is established thanks to Sonic hedgehog—a signalling molecule well-known for giving the digits of the limb their different identities (so that your thumb is different from your pinky, for example). These findings suggest the pre-existing digit identity mechanism was co-opted during the evolution of flight feathers, allowing birds take to the air.

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  3. Alien plants often spell trouble for birds whose habitats are under siege. They can alter food abundance, nest site availability and other critical resources. However, a new study published this week in the journal Conservation Physiology shows that the relationships between exotic, invasive plants and native birds are not always that simple, and not always negative.

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