Parrots, change of colour in; imitative faculties of; living in triplets; affection of; colours and nidification of the; immature plumage of the; colours of; sexual differences of colour in; musical powers of.
Parthenogenesis in the Tenthredinae; in Cynipidae; in Crustacea.
Partridge, monogamous; proportion of the sexes in the; Indian; female.
Partridge-“dances.”
Partridges, living in triplets; spring coveys of male; distinguishing persons.
Parus coeruleus.
Passer, sexes and young of.
Passer brachydactylus.
Passer domesticus.
Passer montanus.