Rufous hummingbird sucrose preference: precision of selection varies with concentration
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Published source details
Blem C.R., Blem L.B., Felix J. & Gelder J.V. (2000) Rufous hummingbird sucrose preference: precision of selection varies with concentration. The Condor, 102, 235-238.
Published source details Blem C.R., Blem L.B., Felix J. & Gelder J.V. (2000) Rufous hummingbird sucrose preference: precision of selection varies with concentration. The Condor, 102, 235-238.
Actions
This study is summarised as evidence for the following.
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Provide supplementary food for hummingbirds to increase adult survival Action Link |
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Provide supplementary food for hummingbirds to increase adult survival
A replicated trial in a coniferous forest in Montana, USA, in the summers of 1996 and 1997 (Blem et al. 2000) found that rufous hummingbirds Selasphorous rufus preferentially consumed sucrose at a 50% concentration or above when give a choice of solutions at between 10 and 70%. Solutions were provided from arrays of four 10 ml syringes at 12 feeding stations, 100 m apart. All solutions were measured in weight-volume concentrations (i.e. 40% solution is 40 g sucrose in 100 ml water).
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