Re: Why is their a noticable fat differince between turkeys and chickens?

Well, I do not actually know.  I also could not find any reputable 
information on the internet, so maybe no one knows!  

I'd venture a guess, though.  By thinking about the evolutionary 
histories of the two species, you come up with chickens having been 
domesticated for many long years (thousands) and turkeys being a recent 
addition (a few hundred).  Perhaps chickens have been bred for less fat 
over the years, and thus are simply products of our domestication, and 
turkeys are on the way there too.

The other thing that might be happening is the origional location of the 
birds.  Turkeys come from the Northeast, very cold in the winter.  Fats 
keep you warm through insulation, as well as a high lipid content will 
keep cell membranes more fluid in cold weather- a great adaptation.  So 
it could be genetic.

Other then that, I'm not sure.  Great question.