broody
noun
°(Poultry) A female bird which is in the condition to incubate eggs; a broody hen, duck, etc.
adjective
°(Of birds) sitting persistently and protectively on a nest, in order to hatch eggs (eg, 'a broody hen').
°(Of any creature or person) acting interested in raising young.
synonyms: clucky, baby rabies, one's biological clock is ticking