How can I get darker yolks?

Advertisement Purina Flock Layer


9 Years
Jun 25, 2010
Annandale, New Jersey
We have Bufs and RI Reds. About 10 months old. Have laid eggs all winter. With spring and access to worms I thought that we would see a darkening of the yolks to a darker deeper orange. Our eggs still remain yellow. We feed them Dumour feed and kitchen scraps. Eggs are good size and well formed.
Any suggestions??
My RIRs eat grass all day long and lay eggs with very dark orange yolks. The bad news is that if they eat too many greens they get softer shells so I need to give them oyster shell to give them more calcium.

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