Defensive posture and eyespots deter avian predators from attacking caterpillar models

@article{Hossie2013DefensivePA,
  title={Defensive posture and eyespots deter avian predators from attacking caterpillar models},
  author={Thomas John Hossie and Thomas N. Sherratt},
  journal={Animal Behaviour},
  year={2013},
  volume={86},
  pages={383-389}
}

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References

SHOWING 1-10 OF 33 REFERENCES
Eyespots interact with body colour to protect caterpillar-like prey from avian predators
Fixed eyespot display in a butterfly thwarts attacking birds
Number of eyespots and their intimidating effect on naive predators in the peacock butterfly
TLDR
It is unlikely that conspicuousness as such has selected for eyespots in the peacock butterfly, and it is suggested that it is simply the conspicuousness of eyespot patterns that is intimidating, possibly due to a sensory bias.
Prey survival by predator intimidation: an experimental study of peacock butterfly defence against blue tits
TLDR
The results showed that eyespots alone, or in combination with sound, constituted an effective defence; only 1 out of 34 butterflies with intact eyespots was killed, whereas 13 out of 20 butterflies without eyespots were killed, indicating that they are not distasteful.
A tropical horde of counterfeit predator eyes
TLDR
It is proposed that the many different, but essentially similar, eye-like and face-like color patterns displayed by hundreds of species of tropical caterpillars and pupaeconstitute a huge and pervasive mimicry complex that is evolutionarily generated and sustained by the survival behavior of a large and multispecific array of potential predators: the insect-eating birds.
The Function of Eyespot Patterns in the Lepidoptera
TLDR
It has been shown that many small passerines possess inborn responses to their predators, and it is probable that these are "parasitised" by the eyespot patterns of insects.
Crypsis versus intimidation—anti-predation defence in three closely related butterflies
TLDR
It is demonstrated that birds take longer to discover the leaf mimicking species, the comma, than the tortoiseshell and the peacock, and the intimidating pattern and behaviour of peacocks was effective—when discovered, all peacocks survived interactions with blue tits, whereas only 22% of commas and 8% of small tortoisehells survived.
Antipredatory Function of Head Shape for Vipers and Their Mimics
TLDR
It is demonstrated that the triangular head shape typical of vipers can act as a warning signal to predators, and suggested that head-shape mimicry may be a more common phenomenon among more diverse taxa than is currently recognised.
Can't tell the caterpillars from the trees: countershading enhances survival in a woodland
TLDR
These experiments provide the first demonstration, in an ecologically valid visual context, that shadowing on bodies (such as lepidopteran larvae) provides cues that visually hunting predators use to detect potential prey species, and that countershading counterbalances shadowing to enhance cryptic protection.
HEAD TRIANGULATION IN TWO COLUBRINE SNAKES: PROBABLE BEHAVIOURAL REINFORCEMENT OF BATESIAN MIMICRY
TLDR
Two Israeli aglyphous colubrid snakes seem to mimic venomous viperid snakes, and any of five hypotheses may enable the evolution of such mimicry systems in which the model may be lethal.
...
...