...; however, when the stimuli are paired, flies adjust for sudden 90 deg movements, performing sun orientation. Lastly, we found no evidence of a time-compensated sun compass when we moved the paired stimuli at 15 deg h −1 for 6 h. This study demonstrates that wavelength influences how flies respond to visual...

... in Central Mexico. To find their way on this long journey, they use a sun compass as their main orientation reference but will also adjust their migratory direction with respect to mountain ranges. This indicates that the migratory butterflies also attend to the panorama to guide their travels. Although...

... - 8954 . 10.1073/pnas.1408039111 Coemans , M. A. J. M. , Vos Hzn , J. and Nuboer , J. F. W. ( 1994 ). The relation between celestial colour gradients and the position of the sun, with regard to the sun compass . Vision Res. 34 , 1461 - 1470 . 10.1016/0042-6989(94)90148-1...

.../1644 Lebhardt , F. and Ronacher , B. ( 2014 ). Interactions of the polarization and the sun compass in path integration of desert ants . J. Comp. Physiol. A Neuroethol. Sens. Neural Behav. Physiol. 200 , 711 - 720 . 10.1007/s00359-013-0871-1 Lehmann , F. O...

.../user-licence-1-1/ Summary: Relative to celestial cues, fruit flies select unpredictable flight headings and maintain them with gradually increasing fidelity. This may be a general dispersal strategy for animals with no target destination. Navigation Dispersal Sun compass Central...

...Ingo Schiffner; Bettina Siegmund; Roswitha Wiltschko We analysed the tracks of clock-shifted pigeons from six releases to determine how they cope with the conflict between their sun compass and other navigational cues. Time-lag embedding was used to calculate the short-term correlation dimension...

..., J.R.K. and W.F.T. wrote the paper, and W.F.T. prepared the figure. COMPETING INTERESTS No competing interests declared. 29 1 2013 1 7 2013 © 2013. Published by The Company of Biologists Ltd 2013 orientation sun compass learning panorama Fig. 1. Aerial...

...Katelyn M. Dovey; Jordan R. Kemfort; William F. Towne SUMMARY Honeybees have at least three compass mechanisms: a magnetic compass; a celestial or sun compass, based on the daily rotation of the sun and sun-linked skylight patterns; and a backup celestial compass based on a memory of the sun's...

... identification of the sun and the moon at night. Tested in artificial conditions of illumination at night without the artificial gradient of luminance, the artificial astronomical cue is identified as the moon even when the conditions of illumination allow sun compass orientation during the day. When...

..., i.e. to the use of a time-compensated sun compass. Lizards reaching learning criteria were subjected to 6 h clock-shift (fast or slow), and tested for goal orientation in the Morris water-maze. Results demonstrated that the learned orientation response is mediated by a time-compensated sun compass...

... of different cations to the sea–land directional choice of Talitrus saltator (Crustacea, Amphipoda) by the sun compass orientation mechanism. Results of releases carried out in basic seawater selectively deprived of Ca 2+ , Mg 2+ or K + and containing the same concentration of Na + indicate that only...

...William F. Towne SUMMARY Many species learn the sun's daily pattern of azimuthal movement (the solar ephemeris function) for use in sun-compass orientation. In honeybees, this learning is accomplished with much innate guidance and yields stubborn,imprinting-like retention of certain aspects...

... nonetheless recall the sun's compass bearing relative to novel flight routes in their natal landscape. Specifically, we moved a hive from one landscape to a differently oriented twin landscape, and only after transplantation under overcast skies did we move a feeder away from the hive. These bees nonetheless...

... is stored in an encapsulated cognitive module in which the ephemeris is inextricably linked to the reference landscape in which it was learned. * Author for correspondence (e-mail: [email protected] ) 1 9 2005 © The Company of Biologists Limited 2005 2005 bee sun compass landmark...

... and some unknown site-dependent features. * Author for correspondence (e-mail: [email protected] ) 11 11 2004 © The Company of Biologists Limited 2005 2005 homing pigeon sun compass anosmia visual landmark orientation Kramer's `map and compass' concepts are useful...

... pigeons' ephemerides? Naturwissenschaften 78 , 330 -333. Towne, W. F. and Kirchner, W. H. ( 1998 ). Honey bees fail to update their solar ephemerids after a displacement. Naturwissenschaften 85 , 459 -463. Ugolini, A. ( 1996 ). Jumping and sun compass in sandhoppers: an antipredator...

...Cheri A. Budzynski; Fred C. Dyer; Verner P. Bingman ABSTRACT The ability of animals to learn to use the sun for orientation has been explored in numerous species. In birds, there is conflicting evidence about the experience needed for sun compass orientation to develop. The prevailing hypothesis...

...Roswitha Wiltschko; Michael Walker; Wolfgang Wiltschko ABSTRACT Birds using their sun compass must compensate for the apparent movement of the sun with the help of their internal clock. The movement of the sun is not uniform, being much faster around noon than near sunrise and sunset. If the sun...

[email protected] ) 03 11 1999 22 12 1999 © 2000 by Company of Biologists 2000 navigation pigeon Columba livia sun compass tracking The mechanism by which homing pigeons navigate from an unfamiliar place is now relatively well understood. Pigeons determine their location...

... link the problem with the observation that deflections of initial orientation caused by clock-shift are often smaller than predicted on a pure sun compass basis. We substantiate the hypothesis that consistently reduced deflections and increased angular scatter occur only when pigeons are released...