The Lincolnshire Bird Club

I understand the Cetti"s warbler last recorded at MSQ,will be in the report as a presumed female.
Cetti"s Warblers as far as i know are sexes and ages alike,the bird was calling,males tend to sing mostly in the birding world.
So therefore im mystified by the statement made on this forum,now deleted i notice.
The only info i can find of a difference in male and female comes from the BTO,
Biometrics
wing length;
Male 63.2+1.9 61-66mm n=193
Female:56.5=1.9 54-60mm n=219=also weight,male is larger according to bto/Regards,
Roger Hebb.

Another thing,size difference would not be apparent in the field,would it??
Roger.

The sexes of Cetti's are easily distinguished in the hand on size, and with lots of experience and a good view it is possible in the field.........but how often does one get a good view of a Cetti's in the field !?!

Alan

hi alan,
noted what you say,does the female call out as does the male?
Yours,
Rog.

I think it is only the male that does the really loud 'explosive' song. In my experience males are less skulking than females, who occasionally sing at a lower volume, but generally just produce single, often repeated, notes.

If we get a couple of mild winters, I think we may get Cetti's established in Lincs.

Alan