Definition of ophthalmology for English Language Learners. medical : the study of the structure, functions, and diseases of the eye.
Pullet: Six Weeks to One Year. Young female chickens less than 1 year old that have fully feathered out and are about the size of large pigeons are called pullets. Expect your barred rock pullet to start laying eggs when she is about 16 to 20 weeks old. Once she begins laying, she should produce one egg every 25 hours â except during the cold, dark hours of winter when she may not lay at all -- until her first molt a year later.
I know Barred Rock's are reported to not go broody, and that is why they're good production hens. I have two barred rocks and upon looking in the coop today I noticed Esther was sitting in the box. She lays early in the morning, never the afternoon, so I opened the door to the garden.