“In the ‘Norwich Nat. Trans.,’ an enumeration was given of female Redstarts (_Ruticilla phoenicurus_) assuming male plumage (_l.c._) to which the following may be added: a hen _R. phoenicurus_ assuming male plumage, and very like Mr. Millais’ described in the ‘Norwich Nat. Trans.’ iv., p. 182, was caught by Mr. W. E. Clarke sitting upon her eggs, at Wike, near Leeds, in June, 1886; at the same time Mr. Clarke saw the cock close by, which appeared to be in the ordinary male plumage. The late Mr. Henry Doubleday’s collection contained a hen Redstart (_R. phoenicurus_) in male plumage, which had the ovaries ‘quite perfect and full of eggs’ (_cf._ B. of Norf., i, p. 370, note), probably one of those alluded to by Yarrell (Brit. B. 1st ed. i, p. 240) in the remarks made by him on the plumage of this species. I have some recollection of this Redstart at the dispersal of Mr. Doubleday’s collection, but do not know who was the purchaser of it. There can be no doubt that more would soon turn up if looked for; and now that attention has been drawn to the subject, and the practice of dissection is getting more general among bird stuffers, it is certain to be the case, not only in _Ruticilla_, but in other genera besides. Why it should happen in _Ruticilla phoenicurus_ oftener than in other Passerine birds is hard to explain, but such is evidently the case.” “The same is recorded to have happened five or six times with the female Red-backed Shrike (_Lanius colluria_); see ‘the Field,’ June 17, 1871, and April 25, 1885; Mag. N. H., iv, p. 344; ‘B. of Suffolk,’ p. 45; ‘Ibis,’ 1863, p. 292; but the number of hen Redstarts which have donned masculine attire is greater. “The following is a list of the species in which one or more instances of females assuming male plumage are ascertained to have occurred: