Yellow-throated warbler

“ I have often watched these warblers feeding in my yard and have seen them take small, active caterpillars on numerous occasions. There seems little doubt that scale insects are often taken, as the yellow-throated warbler, creeping about the limbs of trees as it does, undoubtedly finds many of these tiny, but destructive pests. There can be little question as to its benefit to agriculture.
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Behavior.—There is much that is reminiscent of the brown creeper in the habits of the yellow-throated warbler. ”

“ Field marks.—The golden-cheeked warbler might at first glance be mistaken for a black-throated green warbler, but the upper parts in the adult male are deep black from crown to tail, instead of olive-green, and the under parts, except for the black throat, are white and not tinged with yellow. ”

“ The veiling is conspicuous on the throat.” The adult winter female is much like the first winter male, “and may have considerable black on the throat, and even the chin.”
The adult nuptial plumage is acquired mainly by wear, with only slight indications of molt, as in the young bird. Dr. Dwight says of the female: “The adult nuptial plumage is, in extreme examples, hardly distinguishable from the male, but usually the black is much restricted and the chin yellow, merely spotted with black.”
Food.—We have only scattering reports on the food of the black-throated green warbler. ”

“ This lively little warbler, with its nervous habit of tipping up its tail incessantly like a spotted sandpiper, resembles its near relative the yellow warbler in a few respects. The olive-green upper parts and yellow breast streaked with brown are points of resemblances, but the chestnut crown and yellow line over the eye are differences. Neither yellow warblers nor yellow palm warblers are dwellers in the woods, but prefer to live near the haunts of man. ”

“ On the opposite side of the path, in the bushy angles of a Virginia fence, a hooded warbler showed himself, furtive and silent,—my only Bridge specimen, to my great surprise; and near him was a female black-throated blue, a queer-looking body, like nothing in particular, yet labeled past mistake, [255] which I can never see without a kind of wonder. Among the treetop birds were Blackburnian warblers, black-throated greens and blues, chestnut-sides, redstarts, myrtle-birds, red-eyed and yellow-throated vireos, and indigo-birds. Many white-throated sparrows still lingered ”

“ Although a number of wood warblers which winter in the Central American highlands are gregarious, those that center in the lowlands are typically solitary. In this, the yellow warbler is no exception. Each wintering bird appears to have its own territory, from which it attempts to drive others of its kind. Trespassers are scolded with insistent chips; or more rarely, soon after his arrival, a male will sing while defending his claim. ”

“ I don't believe there is anybody living who could name at sight every one of the seventy warblers that visit the United States. Some are very gaily coloured and exquisitely marked, as birds coming to us from the tropics have a right to be. Some are quietly clad; some, like the redstart, are dressed quite differently from their mates and young; others, like the yellow warbler, are so nearly alike that you could see no difference between the male and female from the distance of a few feet. ”

“ Next to the yellow warbler, this is probably the best known of the wood warblers and is about the second one of the group that the novice learns to recognize. All through the eastern United States this is by far the most abundant warbler on both migrations, being about the first to arrive in the spring and the last to leave in the fall, often remaining all winter nearly up to the southern limits of its breeding range. It is a large, conspicuous warbler, not at all shy, and is to be found almost anywhere, often in enormous numbers. ”

“ He darts out of his retreat and flies away over the shrubbery, twisting and turning his body, raising and dropping his tail as if all his joints were of the ball and socket pattern, making as many ridiculous contortions and as many varieties of squeaks and squalls as an old-time elocutionist.
Besides numerous individuals of the species of warblers already named, in the two weeks between April 9 and 23 I saw one or more of each of the following: Yellow or summer, bluewinged, worm-eating, magnolia, golden winged, chestnut sided, prairie, and the redstart. ”

“ Many of them, however, nest in bushes, vines, and shrubbery, and by planting clumps of these near houses something can be done toward increasing the numbers of certain species, as the yellow warbler and the redstart. Because our warblers are chiefly insectivorous, their food habits bar them from the usual bird lunch-counter in times of hard storms. ”

“ In half-cleared fields which have grown up to sprouts, and in rich open woods in the bottom-lands, where the switch-cane forms a considerable proportion of the undergrowth, the blue-winged yellow warbler is one of the characteristic birds, says Ridgway. ”

“ The familiar yellow warbler, also commonly called the summer yellow bird or wild canary, is the best known and the most widely known of all of our wood warblers. It is one of the few birds that almost everybody knows by one of the above names. It is universally beloved as it comes to us in the flush of budding spring, gleaming in the shrubbery, like a rich yellow flame among the freshly opening leaves, or bringing to the apple orchards a flash of brilliant sunshine [161] to mingle with the fragrant blossoms. ”

“ I have sat for an hour within a few feet of a pair of these lovely birds and watched them building their nest. The many fine photographs that I have received show that it is an easy subject for close-up pictures; the near presence of the camera does not seem to disturb them in their feeding routine. Many intimate home-life studies have been very successful, for they are brave and devoted parents. Robie W. Tufts (1927) has had a male yellow warbler come at least twice to feed a brood of young that he was holding in his hand, and once he even wiped his bill on his thumb. ”

“ It is much better to hunt them now, when you have but to stand on a little hillock and count, then pluck the nest that you prefer and take it home with you without abraiding anybody’s feelings. The yellow warbler mother bird seems to have a great love for the tender buff wool of the young shoots of the cinnamon fern,{185} which are just about ready to shed these delicate overcoats when nesting begins with the yellow warblers. In fact, her color scheme is perfect. ”

“ A few, however, remain and build in our parks, gardens and shrubbery. They are all insect-eaters, destroying ants, flies, caterpillars, larvæ, plant lice, canker-worms, and May flies. They are therefore of great value in the protection of vegetation.
The mourning warbler, whose common name is black-throated ground warbler, has its habitat in eastern North America, breeding from northern United States northward; more rare in the Atlantic states. It winters in south-eastern Mexico, and Costa Rica, and thence south to Colombia. During the spring migration this bird is very common. ”

“ The Southern and Middle States are where it is most abundant. Here is a wood warbler that is not a bird of the woods — less so, in fact, than either the summer yellowbird (yellow warbler) or the palm warbler, that are eminently neighborly and fond of pasture lands and roadside thickets. But the prairie warblers are rather more retiring little sprites than their cousins, and it is not often we get a close enough view of them to note the brick-red spots on their backs, which are their distinguishing marks. They have a most unkind preference for briery bushes, that discourage human intimacy. ”

“ Like most of the same sex of other Warblers, the female of this species is very shy, and seldom noticed except when an intruder disturbs the nest or when feeding the young after leaving it, but the male Golden-cheeked Warbler is by no means a shy bird. He keeps continually flying from tree to tree in search of insects, and on fine days uttering his song at short intervals from early dawn until after sundown, and before nest building begins shows little alarm upon being approached. ”

“ He who would make the acquaintance of the worm-eating warbler must seek it in its own chosen home, far from which it never strays. It is a bird of shaded hillside and dark thickets along watercourses. Though nimble in its movements and an active insect hunter, it is an unobtrusive little warbler, garbed in very modest colors, and is likely wholly, to escape the notice of the unobservant. ”

“ The male black-throated blue warbler is one of the most conspicuous of the warblers, his black throat and blue back serving to distinguish him at all times and all seasons. The female, despite her inconspicuous coloration, may always be identified by the white spot on the primaries. The bird is common and ranges widely through eastern North America, and few flocks of migrating warblers are without a greater or less number of this species. ”

“ The yellow warbler, who is a famous sufferer from her visits, sometimes outwits her, as we have seen; but other warblers, less clever, the vireos, some sparrows, and, more rarely, woodpeckers, flycatchers, orioles, thrushes and wrens, seem to accept the unwelcome gift without a protest. ”

“ They are very silent, uttering now and then a ‘cheep,’ and always busy searching among the leaves and cones for insects. Among some fifty collected in the first week in August, 1896, there were only two or three adults. The young males have the most coloring, but they in no way approach adult plumage. These great flights of the hermit warbler are intermingled with other species, Hammond flycatcher, Calaveras and lutescent warblers, Cassin vireo, and sometimes Louisiana tanagers and red-brested nuthatches. ”

“ The Yellow Warbler is peculiarly a bird of sunshine, and is to be found chiefly in open situations. It swarms thru the orchards and gardens, frequents the wayside thickets, and in town takes possession of the shrubbery in lawn or park. It is abundant in swampy places, and is invariably present in season along the banks of streams which are lined with willows, alders, and wild rose bushes. ”

“ Wheelock (1904) writes in the same vein: “In the spring these oaks are particularly infested with the green caterpillars, and the Warblers never seem to tire of devouring the pests. They lean way over to peer under every leaf, or reach up to the twigs overhead, never missing one. Twenty of these worms is an average meal for a Black-throated Gray Warbler, and the total for a day must reach into the hundreds.”
Behavior.—The black-throated gray warbler is not one of the most active wood warblers except when it is busy feeding ”

“ The male has never been seen to assist either at nest-building or incubation.
In the Yosemite region, where Grinnell and Storer (1924) found the black-throated gray warbler in fair numbers among the golden oaks on the north walls of the Valley, they found a nest “placed 5 feet 6 inches above ground in a mountain lilac (Ceanothus integerrimus) bush against a main stem.”
From southern California, James B. Dixon writes to me: “This bird breeds sparingly from 2,500 feet to the tops of our mountain ranges in San Diego, Riverside and San Bernardino Counties. ”

“ Dwight (1900) says that the young Tennessee warbler in juvenal plumage, in which the sexes are alike, is similar to the young Nashville warbler in similar plumage but lacks the brownish cast and has a faint transocular stripe. He describes it as “above dull grayish olive-green, the rump brighter. Wings and tail clove-brown, the primaries whitish edged, the secondaries, tertiaries and wing coverts greenish edged with two yellowish white wing bands. Below grayish buff rapidly fading when older to a greenish gray; abdomen and crissum pale straw-yellow. ”

“ The Prothonotary Warbler is a very strongly territorial species. When a male takes possession of a certain area he continually drives off all opponents [19] if he is able. At certain areas in Michigan I have watched these birds battle intermittently for two or three days, usually for the same bird house, one male finally taking possession. In addition I have observed them to drive off House Wrens (Troglodytes aedon) , Black-capped Chickadees (Penthestes atricapillus) and Yellow Warblers (Dendroica aestiva) . ”

“ The Cuban yellow warbler was originally described by Baird (1864) as a full species but is now regarded as a subspecies of Dendroica petechia. Ridgway (1902) describes it as “similar to D. p. petechia, but duller in color; adult male with upper parts much darker olive-green, the pileum usually concolor with the back, sometimes slightly more yellowish, very rarely tinged with orange-ochraceous, and wing-edgings less purely yellow; adult female usually duller in color than in D. p. ”

“ The nest and eggs are not readily distinguishable from those of several other warblers. The males sing frequently from their perch on the topmost twig of a spruce tree, thus misleading one as to the whereabouts of the female and nest. The song resembles somewhat that of the black and white warbler, but is rather less wiry. ”