RachelS -- what pretty chicks
Sheriff-- thanks for comparing the colors - and helping us all understand
Kevin - appreciate your digging to find links. Thanks.
Here is something I have heard about (not related to feathering at all I think---)
The blue in the shell comes from a pigment that is related to bile production called oocyanin. Only had to check that 4 times to be sure I spelled correctly. Brown pigments come from among others a derivative of hemoglobin.
In this scientific paper, (about blue footed boobies and not our back yard chickens...but bear with me.....) They talk about a bluer egg with an increase in carotine in the diet. The paper states that the production of the coloration is 'expensive' - which I think means takes a lot out of the chicken and thus the bluer the egg--the healthier the chicken to have enough excess capacity to produce the blue. (thinking I interpreted it correctly here, regarding the 'expensive' terminology. )
http://webs.uvigo.es/avelando/pdfs_archivos/moralesetal2011BESa.pdf
so, would my chickens eat carrots? (I haven't tried this) shredded carrots, cooked carrots, baby food puree carrots, carrot pudding? - thinking of a little kid here...who refuses veggies. Would too much beta carotine harm them?
Surfed the internet a little to get this far...and now have to leave...but the wheels are turning.
Also a woman in Canada has said that she has selected the bluest eggs for hatching and in generations obtained bluer eggshells--- (don't just say well duh..... here is some empirical rather than theoretical reinforcement)
Here are some links about eggshells.
http://poultry.allotment.org.uk/advice/eggs/egg-shell-colour
http://www.nytimes.com/2010/05/04/science/04qna.html?_r=1
http://www.blpbooks.co.uk/articles/egg_shell_colour/egg_shell_colour_chart.php
Regarding feather colors---- what we have to go on is the UK SOP right? -- and since the descriptions are verbal...I still think that our birds fit. Obviously, we would want to go for lighter...but that one from Germany that I posted....may be too light. (OR will the white variety of Cream Legbars here grow up to look more like that--getting some faintly visible barring as they reach full maturity. )
ETA - Johnn - I always think Mellow is so pretty and sweet.....how is the chick doing?