As at other islands in Micronesia, the numbers of birds in immature plumage at Guam seemingly exceeds the number of birds in adult plumage.
Similar observations were made by Coultas, who noted the ratio of birds in immature plumage to birds in adult plumage at Kusaie to be 5 to 1.
He found the bird in flocks of two to six or more and noted that birds in immature plumage seemed to outnumber the birds in adult plumage approximately five to one.
At Palau, as at other islands, more of the starlings seen were in immature plumage than in adult plumage.
There are two specimens in the Museum in Guernsey both in immature plumage; in that state, in fact, in which this bird most commonly occurs, and in which it is the Bald Buzzard of Bewick.
The generality of specimens occurring in the Channel Islands are in either winter or immature plumage, very few having assumed the dark-coloured head which marks the breeding plumage.
The Eider Duck occasionally straggles to the Channel Islands in the autumn, but very seldom, and the majority of those that do occur are in immature plumage.
Unfortunately for the theory of sexual selection, there is evidence to show that the cock Paradise Fly-catcher (Terpsiphone paradisi) in immature plumage is quite as successful in obtaining a mate as is the cock in his final plumage.
Another objection to the theory that the bright colours of cock birds are due to feminine selection is presented by those birds which breed in immature plumage.
Thus the goshawk and peregrine falcon resemble each other in being brown above and streaked below in immature plumage, and having barred underparts and a grey upper plumage when adult.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "immature plumage" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
