Regine Weckauf - Sexing Lesser Adjutant Storks

Regine Weckauf Sexing Lesser Adjutant

Storks

SexingLesserAdjutantStorks

26thMarch2012SiemReap

RegineWeckauf

or?

Sexualdimorphism

LesserAdjutantStorkHowtoknow?

MaleorFemale??ReliableonlybyDNA‐test–feathersamples

Whydowecare??

PopulaJonissmallanddeclininggloballylistedas

‘’Vulnerable’’

OccurrenceofLesserAdjutantStorks

Lateralheadpicturesof20storks

20storksx19measurements=

RaJos!

• 28horizontalmeasurementraJos• 55verJcalmeasurementraJos =1660RaJos

StaJsJcssuck

buttheygiveniceresults

niceresults

DiscriminantFuncJonAnalysis

DiscriminantFuncJon

V4=BillheightV7=Commissuralpointtocrown

Example

Threshold=–0.099above‐0.099=malebelow‐0.099=female

GreaterAdjutantStork

GreaterAdjutantStork

Whatwewanttoremember:• ThereareLesserAdjutantstorksinCambodia!• BoyandgirlstorkslookalikebutyoucandisEnguishthembytheirheadproporEon,staEsEcallyproven• Welikethem

ThankYou

Regine Weckauf Thank You!