But what are we to conclude with respect to certain birds in which, for instance, the eyes differ slightly in colour in the two sexes?
These protuberances in their periodical appearance resemble the fleshy caruncles on the heads of certain birds; but whether they serve as ornaments must remain at present doubtful.
Sharp-edged and pointed; shaped like a pruning knife, as the beak of certain birds.
Having the toes bordered by membranes; fin-footed, as certain birds.
Having down upon the pterylæ only; -- said of the young of certain birds.
Having the posterior side of the tarsus covered with small irregular scales; -- said of certain birds.
One of the spinelike feathers at the base of the bill of certain birds.
Having broad scutella on the front, and small scales on the posterior side, of the tarsus; -- said of certain birds.
Having the anterior surface of the tarsus covered with scutella, or transverse scales, in the form of incomplete bands terminating at a groove on each side; -- said of certain birds.
Having the tarsi covered with broad transverse scales, or scutella; -- said of certain birds.
We shall hereafter meet with analogous cases in certain birds, in which the male acquires the plumage common to both sexes when adult, at a somewhat earlier age than does the female.
These protuberances resemble, in their periodical appearance, the fleshy carbuncles on the heads of certain birds; but whether they serve as ornaments must remain at present doubtful.
Totipalmate; -- said of the feet of certain birds.
Cross-billed; -- said of certain birds, as the crossbill.
To pass periodically from one region or climate to another for feeding or breeding; -- said of certain birds, fishes, and quadrupeds.
Defn: Deeply forked, as the tail of certain birds.
It is to be hoped that the Act of Parliament empowering County Councils to protect either the eggs of certain birds, or those of all birds breeding within a given area, will be of great benefit to many of our feathered friends.
The protective colour of the plumage of certain birds is the great source of their safety during incubation.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "certain birds" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
