Hi.
Can you help me how to choose breeds that lay very very very big eggs, almost huge?
I am thinking of black hybrids, leghorns, jersey giants and minorcas.
What do you think?
		
		
	 
From 
Sand Hill Preservation Center:
"
EGG WEIGHTS BY BREED
This is a multi-year data. We take this data at the end of July. There is 
nothing truly scientific about it, so please don't read too much into the numbers. A random dozen eggs is weighed from each breed. No attempt to select any size specimens is made. The more years we have had a breed, the more data is used in the average. 
PLEASE USE THIS INFORMATION AS A GUIDE ONLY!!
I. Jumbo (30+ oz./doz eggs):
Wheaten Maran, Blue Copper Maran, Blue Wheaten Maran.
II. Extra Large (27-30 oz./doz eggs):
Welsummer, White Minorca, Black Copper Maran, Delaware, Erminette, Silver Penciled Wyandotte, Black Australorp, Black Orpington, Partridge Barnevelder, Buff Catalana, Partridge Penedescenca, Single Comb Light Brown Leghorn, Barnevelder, Silver Grey Dorking, Silver Laced Wyandotte, Lavender Orpington, Silver Campine, Blue Jersey Giant, Black Langshan, White Jersey Giant, Blue Langshan, Cuckoo Maran.
III. Large (24-27 oz./dozen eggs):
New Hampshire, Blue Andalusian, Colored Dorking, Red Dorking, White Orpington, Auburn Sumatra, Black Minorca, La Fleche, Ancona, Black Jersey Giant, Blue Orpington, Manx Rumpie, Rhode Island Red, Buckeye, Buff Minorca, Blue Ameraucana, Blue Cochin, Salmon Faverolle, Ameraucana, Blue Wyandotte, Black Ameraucana, Buff Orpington, Rose Comb Rhode Island Red, Rose Comb Red Dorking, White Cochin, Golden Lakenvelder, Rose Comb Colored Dorking, Dark Grey Dorking, Flame Jaerhon, Partridge Rock, Crevecoeur, Red Polish, White Dorking, Buff Cornish, Buff Cochin, Black Dorking, Black Cochin, Black Penedescenca, Golden Laced Wyandotte, Mottled Java, Rose Comb Rhode Island White.
IV. Medium (21-24 oz./dozen eggs):
Dominique, Exchequer Leghorn, Lakenvelder, Speckled Sussex, Mahogany Faverolle, Buff Laced Polish, Barred Holland, Creme Brabanter, Partridge Chantecler, White Crested Black Polish, Black Polish, Black Sumatra, Red Leghorn, Golden Campine, White Chantecler, Buff Chantecler, Blue Laced Red Wyandotte, Cuckoo Dorking, Golden Polish, Spangled Russian Orloff, Light Sussex, Cuckoo Scots Dumpie, American Dumpie, Egyptian Fayoumi, Iowa Blue, Red Pyle Cubalaya, Longcrower, Columbian Wyandotte, Black Leghorn, Light Grey Dorking, Black Breasted Red Shamo, Black Crested Blue Polish, Black Shamo, Black Wyandotte, Red Chantecler, Black Breasted Red Kraienkoppe, White Polish, Mahogany Orloff, Red Sussex, Muffed Old English Game, Redcap, Frizzled Black Sumatra, Black Breasted Red Cubalaya, Blue Polish, Buttercup, Dark Shamo, Icelandic, Mille Fleur Leghorn, Norwegian Jaerhon.
V. Small (18-21 oz./dozen eggs):
Silver Polish, Golden Penciled Hamburg, White Cubalaya, Silver Kraienkoppe, Silver Penciled Hamburg, White La Fleche" 
The White Leghorns that I got from McMurrays consistently laid extra large to jumbo eggs as well as the Welsummers that I got from assorted places.  The White Leghorns laid practically every day.  The Welsummers probably averaged 5 eggs a week from spring through fall and then mine would completely stop laying through the winter since I do not provide any supplemental light.