Hi all,

Ideally, I would like to run a GLMM on my data, which are are binomial (so
I'm trying to run a model with a binomial distribution and a logit link).
 I have two fixed effects, fledgling age and playback type.  I have
fledging ID as a random effect.  The problem I'm running into is zero
variance in my response variable - ie fledglings always respond the same
way to some of the playback types.  I can run a model and it converges, but
it spits out an F value of over a million. So I'm wondering (1) is it
possible to use a GLMM with a zero variance response; and (2) if so, which
R package is the most appropriate?


Thanks for your help!

Cheers,

Tonya
-- 
Tonya Haff
PhD candidate
Evolution, Ecology and Genetics
Research School of Biology
Australian National University
Mobile:+61-4-3331-2908
Lab: +61-2-6125-5651

	[[alternative HTML version deleted]]

