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Avian colour vision: Effects of variation in receptor sensitivity and noise data on model predictions as compared to behavioural results
Colour vision models require measurement of receptor noise and the absorbance of visual pigments, oil droplets, and ocular media. We have studied how variation in these parameters influences colourExpand
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The contribution of single and double cones to spectral sensitivity in budgerigars during changing light conditions
Bird colour vision is mediated by single cones, while double cones and rods mediate luminance vision in bright and dim light, respectively. In daylight conditions, birds use colour vision toExpand
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Brightness Discrimination in Budgerigars (Melopsittacus undulatus)
Birds have excellent spatial acuity and colour vision compared to other vertebrates while spatial contrast sensitivity is relatively poor for unknown reasons. Contrast sensitivity describes theExpand
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Out of the blue: the spectral sensitivity of hummingbird hawkmoths
The European hummingbird hawkmoth Macroglossum stellatarum is a diurnal nectar forager like the honeybee, and we expect similarities in their sensory ecology. Using behavioural tests andExpand
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Pterin-pigmented nanospheres create the colours of the polymorphic damselfly Ischnura elegans
Animal colours commonly act as signals for mates or predators. In many damselfly species, both sexes go through a developmental colour change as adults, and females often show colour polymorphism,Expand
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Use of the effluent from biogas production for cultivation of Spirulina
The effluent from the biogas process was tested as a nutrient source during cultivation of the protein-rich and edible microalgae Spirulina (Arthrospira platensis) and compared with conventionalExpand
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Owls lack UV-sensitive cone opsin and red oil droplets, but see UV light at night: Retinal transcriptomes and ocular media transmittance
Most diurnal birds have cone-dominated retinae and tetrachromatic colour vision based on ultra-violet/violet-sensitive UV/V cones expressing short wavelength-sensitive opsin 1 (SWS1), S conesExpand
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Limits of colour vision in dim light
  • A. Kelber, Olle Lind
  • Physics, Medicine
  • Ophthalmic & physiological optics : the journal…
  • 1 September 2010
Humans and most vertebrates have duplex retinae with multiple cone types for colour vision in bright light, and one single rod type for achromatic vision in dim light. Instead of comparing signalsExpand
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An aposematic colour-polymorphic moth seen through the eyes of conspecifics and predators - Sensitivity and colour discrimination in a tiger moth
Although predation is commonly thought to exert the strongest selective pressure on coloration in aposematic species, sexual selection may also influence coloration. Specifically, polymorphism inExpand
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Stimulus motion improves spatial contrast sensitivity in budgerigars (Melopsittacus undulatus)
Birds are generally thought to have excellent vision with high spatial resolution. However, spatial contrast sensitivity of birds for stationary targets is low compared to other animals with similarExpand
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