Frigatebirds are pelagic piscivores which obtain most of their food on the wing.

Frigatebirds are seasonally monogamous, and nest colonially.

Frigatebirds are found over tropical oceans and ride warm updrafts.

This would mean that predation by Great Frigatebirds is significant enough to select towards a cryptic darkening of the plumage, as these are the only predators of Z. m. clarionensis.

Fregatidae or Frigatebirds, are a bird family in Pelecaniformes.

Male Great Frigatebirds are smaller than females, but the extent of the variation varies geographically.

Great Frigatebirds are seasonally monogamous, with a breeding season that can take two years from mating to the end of parental care.

Seabirds include the second largest colony in the western Indian Ocean of Great Frigatebirds ( with up to 1100 pairs ), Audubon's Shearwaters ( up to 100 pairs, probably of the subspecies Puffinus lherminieri bailloni previously considered endemic to the Mascarene Islands ), Dimorphic Egrets and Caspian Terns.

Both Great and Lesser Frigatebirds used to nest on the island but have subsequently become extinct as breeders, though they continue to use the island for roosting.

Both sexes have a patch of red skin at the throat that is the gular sac ; in male Great Frigatebirds this is inflated in order to attract a mate.

Several hundred Great and Lesser Frigatebirds use the island for roosting and can be seen soaring over it.

Other birds recorded on the cays include Masked and Brown Boobies, Silver Gulls, Black-naped, Sooty, Bridled, Greater Crested, Lesser Crested and Little Terns, Black and Common Noddies, and Lesser Frigatebirds.

Frigatebirds dive for food accompanying the debris or sargasso.

Summer visitors should watch for Roseate Spoonbills, Magnificent Frigatebirds and Least Terns.

The most conspicuous differences from the Mourning Dove-darker coloration and more well-developed feet-were useful amid the dark lava rock and the shady forests of its island home, where native mammalian predators were absent but constant threats from Red-tailed Hawks and Great Frigatebirds were present.

This may be an adaptation to the fact that Socorro has no native terrestrial predators, but Red-tailed Hawks and Great Frigatebirds that not infrequently prey on mockingbird-sized birds.

These birds aggressively defend their territory against intruders, even much larger birds such as Magnificent Frigatebirds, toucans, caracaras or hawks.

Great Frigatebirds undertake regular migrations across their range, both regular trips and more infrequent widespread dispersals.

Great Frigatebirds will make use of schools of predatory tuna or pods of dolphins that push schooling fish to the surface.

Great Frigatebirds will also hunt seabird chicks at their breeding colonies, taking mostly the chicks of Sooty Terns, Spectacled Terns, Brown Noddies and Black Noddies.

Great Frigatebirds will attempt kleptoparasitism, chasing other nesting seabirds ( boobies and tropicbirds in particular ) in order to make them regurgitate their food.

There are certainly large areas of understanding in the human sciences which in themselves and even without political invention can help to dispel our present fears.

I think that we are here also talking of the kind of fear that a young boy has for a group of boys who are approaching at night along the streets of a large city.

Our most elemental and unavoidable impressions, he says, are those of being involved in a large arena of powers which have a longer past than our own, which are interrelated in a vast movement through the present toward the future.

The completeness of the connections provide that, for N people, there are Af lines of communication between the pairs, which can become a large number ( 1,225 ) for a party of fifty guests.

Second, our military missile program, going forward so successfully, does not suffer from our present lack of very large rocket engines, which are necessary in distant space exploration.

In this essay, we are, along with most historians, interested in the more general or more inclusive ideas, that are so to speak `` writ large '' in history of literature where they recur continually.

By a combination of music, lighting effects, and narration, famous events that have transpired in these locations are evoked and re-created for large audiences usually to considerable acclaim.

And they have done this on a very large scale, with a veritable flood of novels and stories which are either dystopias or narratives of adventure with dystopian elements.

If we are to believe the list of titles printed in Malraux's latest book, La Metamorphose Des Dieux, Vol. 1 ( ( 1957 ), he is still engaged in writing a large novel under his original title.

For that is the one an increasingly large number of prominent Americans are now proposing.

Our complaint is that in many crucial areas the Kennedy programs are not too large but too small, most seriously in regard to the conventional arms build-up and in aid and welfare measures.

Branch Offices are located in other large cities.

Branch Offices are located in other large cities.

Similar measurements are being initiated to resolve a large discrepancy in the heat of formation of another important combustion product, beryllium fluoride.

Another effect discovered is the large coefficient of thermal diffusion tending to separate nitrogen from the oxygen when temperature differences straddling the nitrogen dissociation region are present.

The District Courts, in the framing of equitable decrees, are clothed ' with large discretion to model their judgements to fit the exigencies of the particular case.

Rather, such assignments are made, as they must be, on the basis of certain overall rules and standards, representing to some extent a statistical approach to the problem, taking into account for each situation some of the variables ( e.g., power and station separations ) and averaging out others in order to achieve the balance which must be struck between protection against destructive interference and the assignment of a number of stations large enough to afford optimum radio service to the Nation.

Some 45 frequencies are assigned for use primarily by dominant Class 1, -- A or Class 1, -- B clear-channel stations, designed to operate with adequate power and to provide service -- both groundwave and ( at night ) skywave -- over large areas and at great distances, being protected against interference to the degree necessary to achieve this objective.

During nighttime hours, because of the intense skywave propagation then prevailing, no large number of stations can be permitted to operate on one of these channels, if the wide area service for which these frequencies are assigned is to be rendered satisfactorily by the dominant stations which must be relied upon to render it.

Such additional daytime class 2, assignments are appropriate if optimum use is to be made of these frequencies, and the Commission has over the years made a large number of them.

And, besides, there are a large number of scholars, artists, composers of music, novelists, poets, essayists, choreographers, lawyers, servants of government, and men of affairs -- hundreds, indeed -- who serve the Foundation well with the advice they give us freely and gratis out of their experience.

Between that year and the buying out of Mr. Darling's interest in 1892, a large portion of the company's precision tool business was carried out under the name of Darling, Brown & Sharpe, and to this day many old precision tools are in use still bearing that famous trademark.