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.
/ O$ W0 n3 {/ p; b/ o/ M+ d9 iWhite eggs are laid by white-feathered hens.
; V1 |& P, \+ {% C) G( E) r, LThese are the most common laying hens in Canada. White eggs are usually less expensive than brown eggs.
Brown-feathered hens usually lay brown eggs.
+ Z  W. m+ ?% g, B! `' i( OProducing brown eggs costs more because brown hens are larger than white ones and they eat more feed.
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  n1 O8 h6 n' P; z7 q9 l8 r, @Young hens lay pee wee eggs and older hens lay jumbo eggs;
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& q  f6 H) d/ |( T2 U4 N$ W4 FFree-run eggs are nutritionally the same as regular eggs.

Organic eggs are nutritionally the same as regular eggs.

/ f% ]' l: x+ S8 tFree-range eggs are nutritionally the same as regular eggs.
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Here is articles:
http://www.getcracking.ca/EDU/a_guide_to_choosing_eggs.pdf

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