I hadn't heard of a flat-sided egg. Please post a photo when you get a chance. Here's some info from my resources:
Description: Eggs are said to be flat-sided when part of the shell is flattened or indented. Often the adjoining part of the shell is wrinkled.
Incidence: Flat-sided eggs normally make up less than 1% of total production. They are most commonly produced by pullets in early lay and may be the result of double ovulation or being held over an extra day in the shell gland. Incidence can vary with the breed.
Possible Cause: Not enough padding in nesting box. Eggs are warm and pliable at first, especially with young layers.
Possible Remedy: Make sure there is enough soft nesting material.
Possible Cause: Disease-- Infectious Bronchitis, Newcastle disease, or other infection of the oviduct.
Possible Remedy: Follow an effective vaccination program.
Possible Cause: Stress, e.g. frights and disturbances.
Possible Remedy: To avoid frightening birds, minimize human activity in and around the shed. Increase shed security to stop other birds and animals entering the shed.
Possible Cause: Crowding
Possible Remedy: Avoid overstocking.
Possible Cause: Incorrect or changes in the lighting program.
Possible Remedy: There should not be sudden, large increases in day length as pullets come into lay.
Too Fast,
I beg to differ; chickens need more than shelter. They need heating, air conditioning, cleaning service, interesting activities, egg pick-up service, food, water, healthful snacks, lectures about sharing and getting along, aprons, dresses, lotions for combs and legs/feet, love, and patience.
Originally Posted by
Too Fast: We, however, have superior eyes when it comes to looking at things!
Too Fast, I don't mean to keep differing, but here's an article: "Chickens See Color Better Than Humans." http://www.livescience.com/8099-chickens-color-humans.html
Speaking of colors-- My reply box has no color choices today! And my PM box has glitches, too. Geez.