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.
! D- R. Q- d) |  V$ _White eggs are laid by white-feathered hens.
These are the most common laying hens in Canada. White eggs are usually less expensive than brown eggs.
Brown-feathered hens usually lay brown eggs.
Producing brown eggs costs more because brown hens are larger than white ones and they eat more feed.
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% K+ y( |0 E; r4 O1 Z, |7 \Young hens lay pee wee eggs and older hens lay jumbo eggs;

Free-run eggs are nutritionally the same as regular eggs.
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  g4 M  ]& }* c4 G# B; g5 ROrganic eggs are nutritionally the same as regular eggs.
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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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