Just googled egg sizing...

[Ken H]

In the U.S. eggs are sized as follows:
Jumbo= greater than 2.5 ozs.
Very large = < than 2.25 ozs.
Large = < than 2.0 ozs.
Medium = < than 1.75 ozs.
Small= < than 1.5 ozs
Pee Wee = < than 1.25 ozs.

My ISA Browns are now laying large eggs! They have increased in size since labor day. I am so proud!

 

[b.hromada]

That's very informative thanks! Way to go on your Isa Browns!

 

[cluckincrazy]

Neato! We're just at 2oz so still medium here. The duck eggs are 3oz...very jumbo?