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Example sentences for: chittka

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Chittka and Tautz (2003) found that bees use exclusively the signal from their green receptors for measuring image velocity (Figure 2), confirming earlier reports that motion vision in bees is mediated only by this receptor type (Giurfa and Lehrer 2001; Spaethe et al.
Perhaps birds are particularly apt at detecting red objects (Chittka and Waser 1997)?
Their excellent colour vision is optimal for flower identification (Chittka 1996), but do they also use it to measure the image velocity of the passing landscape?
Of course, Possingham's model (1992) is not incompatible with birds being more efficient than bees at exploiting red flowers, and the results would be strengthened if, as has been suggested (Raven 1972; Chittka and Waser 1997), birds are better at detecting red flowers than blue ones.
For example, bumblebees walking to a food source in absolute darkness, that is, in the complete absence of visual cues, are able to correctly gauge travel distance (Chittka et al.