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SUMMARY:Bird vision and egg mimicry by cuckoos - Dr. Martin Stevens\, Depa
 rtment of Zoology\, Cambridge
DTSTART:20090513T120000Z
DTEND:20090513T130000Z
UID:TALK17301@talks.cam.ac.uk
CONTACT:John Mollon
DESCRIPTION:Some species of bird are brood parasites\, 'tricking' other ho
 st species into caring for their young. This has\, over co-evolution\, oft
 en led to hosts with increasing ability to recognise and reject foreign eg
 gs\, and counter-adaptations in parasites to evade host defences\, includi
 ng egg mimicry. In some cases\, this can lead to remarkable matches betwee
 n the parasite and host eggs for colour and pattern. I will outline work i
 nvestigating the level of mimicry in several species of brood parasite and
  host\, including changes in egg coloration over time and the ability of h
 osts to detect and reject foreign eggs based on different visual cues.\n\n
LOCATION:Kenneth Craik Room\, Craik-Marshall Building\, Downing Site
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