Provide supplementary food to allow the rescue of a second chick
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Overall effectiveness category Unknown effectiveness (limited evidence)
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Number of studies: 1
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Effectiveness
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Supporting evidence from individual studies
A small controlled study in the Spanish Pyrenees in spring 2004-5 and 2008 (Margalida et al. 2009) found that second-hatched lammergeier (bearded vulture) Gypaetus barbatus chicks from two nests provided with supplementary food survived for nine days, as opposed to seven, five and four days for a partially-supplemented nest and two control (unfed) nests, respectively. In a third supplemented nest (in 2008), the second-hatched chick survived for five days and was removed to be hand-reared and incorporated into a captive-breeding programme. Supplementary food consisted of 2-3 kg of dead rabbits within 100 m of the nests every two days from the hatching of the first chick until the death (or removal) of the second chick. The partially-supplemented nest was provided with food on just one day.
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This Action forms part of the Action Synopsis:
Bird ConservationBird Conservation - Published 2013
Bird Synopsis