The Mink Letterpress Company in North Carolina have put their blood, sweat and tears (probably not) to create this beautiful calendar for 2013. Each month features a different wild bird egg and is printed on delightfully thick cotton cardstock with elegant typography letterpressed beneath. They are selling a limited run on etsy so get involved now and you'll have no reason to forget your mother's birthday.
A video on their production process:
Available on Etsy now!