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Updated: June 26, 2025
The females of Phalaropus fulicarius and P. hyperboreus are larger, and in their summer plumage "more gaily attired than the males." But the difference in colour between the sexes is far from conspicuous. According to Professor Steenstrup, the male alone of P. fulicarius undertakes the duty of incubation; this is likewise shewn by the state of his breast- feathers during the breeding-season.
In some species of Lobivanellus a similar tubercle becomes developed during the breeding-season "into a short horny spur." In the Australian L. lobatus both sexes have spurs, but these are much larger in the males than in the females.
Being a marsh-breeding Gull, and selecting low marshy islands situated for the most part in inland fresh-water lakes and large pieces of water, it is not to be wondered at that it does not breed in the Channel Islands, where there are no places either suited to its requirements or where it could find a sufficient supply of its customary food during the breeding-season.
Some of the birds of paradise retain their nuptial feathers throughout the year, and thus have only a single moult; others cast them directly after the breeding-season, and thus have a double moult; and others again cast them at this season during the first year, but not afterwards; so that these latter species are intermediate in their manner of moulting.
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