@Zud, this is probably much more than you wanted, but this is what I give new "customers." I don't know else they could possibly want to know -- because I tend to overexplain EVERYTHING. Hope you find this useful!
These aren't grocery store eggs
The eggs you are receiving are produced by a group of happy layers that are sheltered at night but are allowed to free range during the day. They forage and choose much of their own food; consequently, their eggs tend to have deep, rich-colored yolks.
The size of the eggs varies by chicken breed. The tiny Cochin Bantams lay much smaller eggs than the Sapphire Gem, a Czech hybrid known for its year-round productivity. Most of the layers are heirloom breeds, including Salmon Faverolles, Iowa Blues (the only breed developed in Iowa), Blue-Laced Red and Columbian Wyandottes and a Buff Orpington. All lay tinted, cream or brown eggs.
Newer additions are full-sized Cochins, a Bielefelder, Buckeyes (the only American breed developed solely by a woman – Nettie Metcalf in the 1890s), Speckled Sussex and Midnight Majesty Maran. Maran eggs are often described as “chocolate-colored.” One of the Easter Eggers lays light green eggs; her sister lays “normal” cream-colored eggs. That's the chance you take with Easter Eggers. A Prairie Bluebell Egger, house chicken Dottie, lays light blue eggs.
If you are receiving duck eggs, all are produced by Indian runner ducks, which lay white eggs. Duck eggs are generally about one-third larger than chicken eggs and have thicker shells. Duck eggs are higher in protein, a benefit to bakers since it results in lighter, fluffier baked goods. The yolks are proportionately larger than in chickens' eggs, and the eggs tend to be higher in healthy Omega-3 fatty acids.
American Buff goose eggs are available briefly in the spring as Gussie and Golly see fit to lay. They only produce for about five weeks, but the eggs are large enough to make an omelet with just one.
My eggs are not washed like grocery store eggs are. Washing removes the protective “bloom” that keeps bacteria from entering the egg through the shell. Stored eggs are not washed in Europe and are quite safe to eat; they will last for weeks without washing. You can either wash the eggs immediately before use, or you can wash and store them in the refrigerator when you receive them, if you are more comfortable with that. But eggs should be washed at some point before use.
My eggs are not stored in refrigeration, and no one has become ill from eating them. Again, many Europeans don't refrigerate their eggs, and for most of this country's history, neither did Americans. At an Iowa State University Extension poultry workshop in Fort Dodge, the ISU small farms project director agreed that refrigeration of eggs is not necessary, and eggs stored outside the fridge will last for weeks. You certainly can refrigerate them if that makes you feel safer.
Huffington Post ran an excellent article on the differences in egg nutrition and manners of storage on July 7, 2020.
While I am not opposed to using an egg carton twice, repeated re-use of egg cartons can result in a build up of bacteria and should be avoided, say experts. Non-Sytrofoam cartons can be recycled.
Unless you request a specific type of egg, all cartons may be a mix of size and species. In an effort to recoup some of my feed costs, I accept a donation of $1 per dozen eggs. The girls thank you for appreciating their work.
Bonus fun fact: Alektorophobia is the fear of chickens.