What is egg leg?

"Egg leg" is not a recognized term in biology or zoology, however one possible concept related to it may refer to the condition of a bird laying an egg without a shell or with a soft, malleable shell, often caused by a lack of calcium or vitamin D in the bird's diet. These eggs may be difficult for the bird to lay, and may require medical intervention to prevent health problems. Another possible meaning of "egg leg" is a term used colloquially to refer to a person who is constantly or excessively obsessed with or trying to hatch eggs, either as a hobby or in a business setting.