While archaeological, this query isn't technically historical archaeology
in the North American sense (it's certainly miles outside my realm of
expertise), but I hope Anita will let me nudge the boundaries slightly
since the answer should be relevant across archaeological periods.

In 2002, my current employers excavated a Roman-period ritual dog burial
as part of a broader excavation.  In the context directly above the dog
burial, and lying in such a manner so as to suggest that they had been
deliberately placed above the burial, were relatively substantial
fragments of eggshell.

Given the unusual nature of the eggshell placement, the manager for the
project in question would like to try and have the eggshell species
identified if possible.  This isn't an area of expertise covered by the
highly competent and capable zooarchaeologist that we use, and while he's
used his extensive contacts in the UK's Professional Zooarchaeologist
Group to try and find someone to undertake this analysis for us, for a
variety of reasons it would appear that there's no one available here whom
we can use in the short term.

So, my question is...

Placing aside for the moment the crucial issues of period- and
geographical-compatibility in comparative collections and skill bases,
would anyone on this list know of someone in North America who specialises
in eggshell species identification, and who potentially might be willing
to take on board a small commission from the United Kingdom?

Just to complicate matters, it shouldn't be assumed that the eggshells in
question are avian.  While this is by far the most likely basic
identification, I've been told that there is a reptilian presence in the
faunal collection of both the broader site and the context directly above
the eggshells.

Thanks for any help,

Alasdair Brooks