The use of time and energy by aerial-feeding birds
The breeding and feeding ecology of the Swallow, Hirundo rustica, and the Sand Martin, R. riparia, in Central Scotland is described, with particular reference to the constraints imposed by environmental conditions. The time and energy investment in reproduction was examined for all stages of the bre...
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University of Stirling
1981
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| Online Access: | http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.524953 |