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SUMMARY:Dazzling butterflies\, dazzled moths\, and BehaveAI
DTSTART;TZID=Europe/London:20260604T140000
DTEND;TZID=Europe/London:20260604T150000
DTSTAMP:20260603T003055Z
UID:bb321a39-9e2d-f111-88b5-6045bdcfe13d
CREATED:20260401T074146Z
DESCRIPTION:Despite centuries of debate and research\, arguments still rag
 e over why undefended butterflies are so visually conspicuous in flight. O
 ur latest research suggests that typical butterfly wing markings create vi
 sual illusions for birds that make it look like they are flying ‘the “
 wrong” way’. Multiple lines of evidence from motion vision modelling t
 o genetic algorithms\, phylogenetic analysis and behavioural validation sh
 ow that this strategy is evolutionarily widespread and effective for confu
 sing predator attacks. I'll also cover some of our latest work on how ligh
 t pollution affects the behaviour and activity of moths\, with 3D flight t
 racking highlighting their complex responses when lights of different inte
 nsities and spectra become visible mid-flight. Finally\, I'll briefly intr
 oduce BehaveAI\; a video analysis framework that can reliably track animal
 s and determine their behaviour from patterns of movement. It achieves thi
 s by converting patterns of motion into false colours\, allowing both huma
 n annotators and neural nets to determine the shape\, speed and accelerati
 on of animals and their body parts in each frame\, making for far more rob
 ust detection and classification of tiny (<2px) camouflaged targets.\n\nBi
 o-Sketch:\n\nVisual information underpins many of the decisions made by an
 imals\, influencing their ecology and evolution. I've investigated a wide 
 range of hypotheses from camouflage to light pollution and sexual selectio
 n\, from blue-sky to applied conservation focus. I've worked across a vast
  range of species and often develop new open-source tools with which to se
 e through the eyes of other animals. My undergrad and Master's were at Oxf
 ord (Pembroke)\, then a PhD on New Caledonian Crows at Birmingham\, post-d
 ocs at Cambridge and Exeter\, and I'm now Associate Prof. at Exeter (Cornw
 all).
LAST-MODIFIED:20260428T082722Z
LOCATION:The Life and Mind Building\, The Life and Mind Building South Par
 ks Road  Oxford Oxfordshire OX1 3RB United Kingdom
SPEAKER:Dr Jolyon Troscianko (Associate Professor at the University of Exe
 ter)
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