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help please male or female.

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dave fixx View Drop Down
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    Posted: 20 Mar 2011 at 9:47pm
I know we have the id section for this but I could swear this adder is a female ,I know some are out already but really finding it hard to sex this one.Its not just me having trouble or I wouldnt have asked.
Dave Williams
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Post Options Post Options   Thanks (0) Thanks(0)   Quote administrator Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2011 at 9:55pm

I'll vote male due to the 'blackness' of the stripe and general proportion of the head.

 

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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave fixx Quote  Post ReplyReply Direct Link To This Post Posted: 21 Mar 2011 at 9:23am
Thanks Gemma,this site is very different to another one I visit as at this one there are plenty of males and not as many (so far) females .The other site is totally the reverse of this,shame they are not closer together.

Dave
Dave Williams
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Post Options Post Options   Thanks (0) Thanks(0)   Quote administrator Quote  Post ReplyReply Direct Link To This Post Posted: 21 Mar 2011 at 10:12am

Hi Dave,

Populations are generally 50/50 you might be seeing a different emergence pattern i.e one site is ahead of the other as females emerge later than males, or is this longterm data?

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dave fixx View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave fixx Quote  Post ReplyReply Direct Link To This Post Posted: 21 Mar 2011 at 4:43pm
one site is a small isolated population and is weighed heavily towards females.Just one and a bit years data from the other so definatly more research to be done.
Dave Williams
davewilliamsphotography.co.uk
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