From the quick test I've just done, no.
{xen:number $birthday.age} is what displays the age (if the date and year of birth has been provided) in the profile.
That parameter then isn't passed to another template, so I would suspect that you'd need an add on for that to work.
Don't worry about posting in the add-on request forum just yet. I might be able to work this out.
EDIT: Ninjaaa!