What is the difference between spangled, mottled, speckled, and millefleur?

[Ameraucana5]

I was just wondering the difference between spangled, speckled, millefleur, and mottled?

 

[junebuggena]

Mille Fleur is the mottling gene expressing on a Buff Columbian bird.
Mottled is the mottling gene expressing on a solid black bird.
Speckled is the mottling gene expressing on a partridge bird.
'Spangled' really depends on the breed. Spangled Hamburgs have a completely different set of genetics from Spangled Old English.

 

[Ameraucana5]

I see, I have a speckled sussex and was wondering the differences between all of them.

 

[Ameraucana5]

Thanks

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