Visual Detection of Cryptic Prey by Blue Jays (Cyanocitta cristata)

@article{Pietrewicz1977VisualDO,
  title={Visual Detection of Cryptic Prey by Blue Jays (Cyanocitta cristata)},
  author={Alexandra T. Pietrewicz and Alan C. Kamil},
  journal={Science},
  year={1977},
  volume={195},
  pages={580 - 582}
}
Blue jays learned to respond differentially to the presence or absence of Catocala moths in slides. This detection of the moths by the jays was affected by the background upon which the moth was placed and its body orientation, thus providing an objective measure of crypticity. These procedures are useful for the study of visual detection of prey. 

Topics from this paper

The detection of cryptic prey by blue jays (Cyanocitta cristata) I: the effects of travel time
TLDR
Quantitative analyses revealed that the blue jays were using a strategy that was more sophisticated and more efficient than the simple time-in-patch rule implied by the marginal value theorem.
Search Image Formation in the Blue Jay (Cyanocitta cristata)
Blue jays trained to detect Catocala moths in slides were exposed to two types of slide series containing these moths: series of one species and series of two species intermixed. In one-species
Crypsis and masquerade
TLDR
This work draws attention to the relationships between ‘crypsis’ and ‘masquerade’, two ways by which signallers match the coloration of their background and how they differ from Batesian mimicry, another adaptation against detection.
Visual predators select for crypticity and polymorphism in virtual prey
TLDR
This is the first controlled experiment on the effects of visual predators on prey crypticity and phenotypic variance, in which blue jays searched for digital moths on computer monitors and found them to be significantly harder to detect.
Prey Detection in Two Tit Species, Parus ater and P. cristatus
TLDR
It is concluded that crested tits use different cues to detect prey and/or search a larger area per unit time than coal tits, which perform better because of their longer stays in microhabitat patches.
Color change and camouflage in juvenile shore crabs Carcinus maenas
TLDR
This experiment shows that crabs are able to adjust their camouflage by changes in brightness over a period of hours, and that this could influence detection probability by predators.
Detection of cryptic prey: search image or search rate?
Animals' improvement in capturing cryptic prey with experience has long been attributed to a perceptual mechanism, the specific search image. Detection could also be improved by adjusting rate of
The startle responses of blue jays to Catocala (Lepidoptera: Noctuidae) prey models
TLDR
Artificial moth models were presented to caged blue jays to investigate the effectiveness of deimatic displays in underwing ( Catocala : Noctuidae) moths and novelty, oddity, conspicuousness, and anomaly are considered as possible stimulus characteristics which trigger the startle response.
The Evolution of Color Polymorphism: Crypticity, Searching Images, and Apostatic Selection
TLDR
This review clarifies the argument for a perceptual selective mechanism and examines the relevant experimental evidence for frequency-dependent, apostatic selection in cryptic prey species.
Behaviourally mediated crypsis in two nocturnal moths with contrasting appearance
TLDR
The results suggest that the contrasting wing patterns of the moth are involved in background matching, and that the moths are able to improve their crypsis through appropriate behavioural orientation.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 11 REFERENCES
Cryptic Moths: Effects on Background Selections of Painting the Circumocular Scales
TLDR
The results suggest that selections of background by cryptic moths, with respect to background reflectance, are genetically fixed.
Background Selections of Geometrid and Noctuid Moths
Several common moths, collected at night and placed in an experimental box, showed daytime selections of backgrounds which tended to match the reflectance of their forewings. In one case, two
Behavioural adaptations of cryptic moths. III: Resting attitudes of two bark-like species, Melanophia Canadaria and Catocala ultronia
TLDR
Two bark-like moth species were tested for resting attitude preferences in an experimental apparatus which allowed a choice between backgrounds having vertically or horizontally oriented surface irregularities, and two mechanisms for effecting an alignment of moth and background patterns are proposed.
Hawks Select Odd Prey
Hawks were offered one color of mouse for ten consecutive captures and then a choice between that and another color. The birds usually selected the odd, or unusual, color. This behavior is probably
Complex Visual Concept in the Pigeon
TLDR
Pigeons were trained to respond to the presence or absence of human beings in photographs and their performances suggest greater powers of conceptualization than are ordinarily attributed to animals.
Pigeon concept formation: successive and simultaneous acquisition.
TLDR
The research extends the techniques used by Herrnstein and Loveland (1964), and confirms their finding that pigeons can master the concept of "person-present" in a visual display.
Tierpsychol. Beih
  • L. Tinbergen, Arch. Neerl. Zool. 13,
  • 1960
Adaptive Coloration in Animals
...
1
2
...