Want this question answered?
The answer is "mare".The expression "as scarce as hen's teeth" means that it doesn't exist (because they don't). The original meaning of "mare's nest" is something illusory--or doesn't exist.In addition to the parallel meaning between the two expressions or idioms, there is also a parallel construction, with a possessive in each case: hen's teeth; mare's nest.This is important in an analogy question, which requires an exact parallel for the answer to be correct (A is to B as X is to Y).The parallel construction provides the test against which other "possible" answers to this analogy can be tried. There are plenty of things that don't exist, for example, but only one expression or idiom that shares with "hen's teeth" both meaning and the possessive construction.
The answer is "gums".
Mare
They sit in the hen house on eggs, on the roost or in a nest.
If it has eggs in the nest.
Mare's Nest
Approximately 36 teeth, I know this because I have a twelve-year-old mare of my own and the vet says she has 36 which is the amount of teeth for an average full-grown mare has.
nest?
A broody hen is easy to spot. The hen will remain on the nest when the other hens are going about their daily routine. The hen will often be aggressive when you reach in to remove her eggs. If you remove the hen from her clutch of eggs she will often run right back to the nest, protesting loudly. The broody hen will not roost with the other birds but remain on the nest over night.
Mare's Nest - 2004 was released on: USA: 3 October 2004 (New York International Independent Film and Video Festival)
she\well\take\to\the\nest
The hen can take short periods off the nest and it will not hurt the brood. A period of over an hour or two may do damage to the brood.