White or Brown eggs---There is no nutritional difference.

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White or Brown: Eggshell colour is determined by the type of hen that lays it. There is no nutritional difference.
White eggs are laid by white-feathered hens.
8 Q2 E$ }1 z+ ?* K4 p, Y) pThese are the most common laying hens in Canada. White eggs are usually less expensive than brown eggs.
: x4 n# h8 T5 E* b$ v/ M: WBrown-feathered hens usually lay brown eggs.
Producing brown eggs costs more because brown hens are larger than white ones and they eat more feed.

% R1 M- X+ B1 q  P) N1 zYoung hens lay pee wee eggs and older hens lay jumbo eggs;

3 p+ Y; o, ^+ R. U% U: vFree-run eggs are nutritionally the same as regular eggs.
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, z; r0 A, r1 X7 d) lOrganic eggs are nutritionally the same as regular eggs.
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4 |. U3 i+ @4 v: |$ N- yFree-range eggs are nutritionally the same as regular eggs.

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5 t6 K9 F. J7 n7 `0 o7 r4 b: n& kHere is articles:
http://www.getcracking.ca/EDU/a_guide_to_choosing_eggs.pdf
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