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Abstract
Wanink, J.H. & Goudswaard, K. 2000. The impact of Lake Victoria's lakefly abundance on Palearctic passerines. Ostrich 71 (1 & 2): 194–197.
In spite of an increase in lakeflies emerging from Lake Victoria, these periodically swarming insects remained an erratic food source for birds. However, even the relatively poor south-eastern shores were exploited by some Palearctic warblers on spring passage. Numbers and weights of Willow and Garden Warbler were correlated with lakefly abundance. The occurrence of lakefly swarms may trigger the birds' departure to the breeding areas, as the superabundance of food allows for rapid premigratory fattening.