Winter egg

(Zool.) an egg produced in the autumn by many invertebrates, and destined to survive the winter. Such eggs usually differ from the summer eggs in having a thicker shell, and often in being enveloped in a protective case. They sometimes develop in a manner different from that of the summer eggs.

See also: Winter

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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In the conditions of the Western part of Romania Aphis nasturtii winter egg stage started in October.
Sometimes, chicken keepers choose to stimulate winter egg laying with an artificial light source.
POUNDS is the amount paid for the world's most valuable Easter egg - the Winter Egg produced by goldsmith Peter Carl Faberge.
But most importantly, different breeds are specialized for different environments, so be sure to look for a chicken breed that meets your needs--such as high winter egg production or tolerance for cold climates.
The winter egg, one of the most beautiful, is carved from a single block of rock crystal representing ice and is adorned with a frost of diamonds.
They found it cut their concentrate requirements in half, thus significantly lowering their feed cost, as well as increasing the size and quality of their winter eggs.
They are a hardy, productive breed that also is an excellent layer of winter eggs. The Rhode Island White is making its comeback, but it needs quality stewards to ensure its future in agriculture.