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Using digital photography to study animal coloration
TLDR
These guidelines include how to linearize the camera's response to changes in light intensity, equalize the different colour channels to obtain reflectance information, and produce a mapping from camera colour space to that of another colour space (such as photon catches for the cone types of a specific animal species).
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Animal camouflage: current issues and new perspectives
The study of camouflage has a long history in biology, and the numerous ways of concealment and disguise found in the animal kingdom provided Darwin and Wallace with important examples for…
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Visual Ecology
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Disruptive coloration and background pattern matching
TLDR
Two key predictions that patterns on the body's outline should be particularly effective in promoting concealment and that highly contrasting colours should enhance this disruptive effect are tested.
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Image calibration and analysis toolbox – a free software suite for objectively measuring reflectance, colour and pattern
TLDR
An image processing toolbox that generates images that are linear with respect to radiance from the RAW files of numerous camera brands and can combine image channels from multispectral cameras, including additional ultraviolet photographs, which enables objective measures of reflectance and colour using a wide range of consumer cameras.
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Speed versus accuracy in collective decision making
TLDR
This work shows that Leptothorax albipennis ants can lower their quorum thresholds between benign and harsh conditions to adjust their speed–accuracy trade–off, and that in harsh conditions these ants rely much more on individual decision making than collective decision making.
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Defining disruptive coloration and distinguishing its functions
TLDR
A formal definition of disruptive coloration is given, a range of sub-principles involved in camouflage are reorganized and it is argued that five in particular are specifically related to disruption: differential blending; maximum disruptive contrast; disruption of surface through false edges; disruptive marginal patterns; and coincident disruptivecoloration.
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The role of eyespots as anti‐predator mechanisms, principally demonstrated in the Lepidoptera
  • M. Stevens
  • Environmental Science
    Biological reviews of the Cambridge Philosophical…
  • 1 November 2005
TLDR
The role of eyespots as antipredator mechanisms has been discussed since the 19th Century and the necessity to consider the potential influence of sexual selection on lepidopteran wing patterns, and the genetics and development of eyespot formation is highlighted.
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Pattern mimicry of host eggs by the common cuckoo, as seen through a bird's eye
TLDR
It is shown that various features of host egg pattern are mimicked by the eggs of their respective cuckoo host-races, and that cuckoos have evolved better pattern mimicry for host species that exhibit stronger egg rejection.
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Visual modeling shows that avian host parents use multiple visual cues in rejecting parasitic eggs
TLDR
These cues correspond exactly to the principal differences between host and parasitic eggs, showing that hosts use the most reliable available cues in making rejection decisions, and select for parasitic eggs that are increasingly mimetic in a range of visual attributes.
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