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.
# W% M; h% @2 z$ _: o7 mThese are the most common laying hens in Canada. White eggs are usually less expensive than brown eggs.
0 R% y( e$ U; z1 Q' v% hBrown-feathered hens usually lay brown eggs.
2 ~$ _7 Z5 w/ t( I! ^  _Producing brown eggs costs more because brown hens are larger than white ones and they eat more feed.

Young hens lay pee wee eggs and older hens lay jumbo eggs;

% s# z: j$ `. n: W* T) y! oFree-run eggs are nutritionally the same as regular eggs.
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Organic eggs are nutritionally the same as regular eggs.

Free-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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