extract specific values from lmer summary

Hi Ben,
I am trying to save specific outputs from the lmer summary, and I was
hoping you might be able to tell me the code to do this. I'm running a
random effects model with only the intercept as a fixed effect. I want
to extract the fixed effect intercept estimate and the variance (or
standard deviation) of the random effect. I seem to have figured out how
to get the fixed effect (model at fixedef) but have had no luck getting the
random effect. I guessed a variety of things and model at ranef returned
something, but it didn't match anything in the summary output. Here is
the output of my model, and I would like to extract and save the st dev
of the random effect (0.21287). Any help would be greatly appreciated.
If you generally know of a resource for figuring out the syntax to
extract specific values from summary outputs, that would be great
because this is a recurring problem for me! By the way, I plan to have
as many of my students at possible attend the workshop you're offering
at Chena HS near Fairbanks in August.
cheers,
Laura

lmer.sheep <- lmer(y ~ (1|year),family=binomial, data = coy,

+ control=list(msVerbose=F,maxIter=1000,maxFN=3000))

lmer.sheep

Generalized linear mixed model fit by the Laplace approximation
Formula: y ~ (1 | year)
Data: coy

Fixed effects:
Estimate Std. Error z value Pr(>|z|)
(Intercept) -0.8083 0.2168 -3.729 0.000192 ***
---
Signif. codes: 0 ?***? 0.001 ?**? 0.01 ?*? 0.05 ?.? 0.1 ? ? 1

mn <- lmer.sheep at fixef
mn

(Intercept)
-0.8083453

lmer.sheep at ranef

[1] 0.09490052 0.09490052 0.03168227 -0.01783168 -0.14832171 -0.04832885