How the Woodpecker Catches A Grub – The Woodpeckers

Hairy Woodpecker (Picoides villosus) by Daves BirdingPix

Hairy Woodpecker (Picoides villosus) by Daves BirdingPix

Look at the birds of the air; they neither sow nor reap nor gather into barns, and yet your heavenly Father keeps feeding them. Are you not worth much more than they? (Matthew 6:26 AMP)


Chapter II

HOW THE WOODPECKER CATCHES A GRUB

Did you ever see a hairy woodpecker strolling about a tree for what he could pick up?

There is a whur-r-rp of gay black and white wings and the flash of a scarlet topknot as, with a sharp cry, he dashes past you, strikes the limb solidly with both feet, and instantly sidles behind it, from which safe retreat he keeps a sharp black eye fixed upon your motions. If you make friends with him by keeping quiet, he will presently forgive you for being there and hop to your side of the limb, pursuing his ordinary work in the usual way, turning his head from side to side, inspecting every crevice, and picking up whatever looks appetizing. Any knot or little seam in the bark is twice scanned; in such places moths and beetles lay their eggs. Little cocoons are always dainty morsels, and large cocoons contain a feast. The butterfly-hunter who is hoping to hatch out some fine cecropia moths knows well that a large proportion of all the cocoons he discovers will be empty. The hairy woodpecker has been there before him, and has torn the chrysalis out of its silken cradle. For this the farmer should thank him heartily, even if the butterfly-hunter does not, for the cecropia caterpillar is destructive.

But sometimes, on the fair bark of a smooth limb, the woodpecker stops, listens, taps, and begins to drill. He works with haste and energy, laying open a deep hole. For what? An apple-tree borer was there cutting out the life of the tree. The farmer could see no sign of him; neither could the woodpecker, but he could hear the strong grub down in his little chamber gnawing to make it longer, or, frightened by the heavy footsteps on his roof, scrambling out of the way.

The Woodpeckers - Boring Lava

Boring Lava

Boring larva

It is easy to hear the borer at work in the tree. When a pine forest has been burned and the trees are dead but still standing, there will be such a crunching and grinding of borers eating the dead wood that it can be heard on all sides many yards away. Even a single borer can sometimes be heard distinctly by putting the ear to the tree. Sound travels much farther through solids than it does through air; notice how much farther you can hear a railroad train by the click of the rails than by the noise that comes on the air. Even our dull ears can detect the wood worm, but we cannot locate him. How, then, is the woodpecker to do what we cannot do?

Doubtless experience teaches him much, but one observer suggests that the woodpecker places the grub by the sense of touch. He says he has seen the red-headed woodpecker drop his wings till they trailed along the branch, as if to determine where the vibrations in the wood were strongest, and thus to decide where the grub was boring. But no one else appears to have noticed that woodpeckers are in the habit of trailing their wings as they drill for grubs. It would be a capital study for one to attempt to discover whether the woodpecker locates his grub by feeling, or whether he does it by hearing alone. Only one should be sure he is looking for grubs and not for beetles’ eggs, nor for ants, nor for caterpillars. By the energy with which he drills, and the size of the hole left after he has found his tidbit, one can decide whether he was working for a borer.

But when the borer has been located, he has yet to be captured. There are many kinds of borers. Some channel a groove just beneath the bark and are easily taken; but others tunnel deep into the wood. I measured such a hole the other day, and found it was more than eight inches long and larger than a lead-pencil, bored through solid rock-maple wood. The woodpecker must sink a hole at right angles to this channel and draw the big grub out through his small, rough-sided hole. You would be surprised, if you tried to do the same with a pair of nippers the size of the woodpecker’s bill, to find how strong the borer is, how he can buckle and twist, how he braces himself against the walls of his house. Were your strength no greater than the woodpecker’s, the task would be much harder. Indeed, a large grub would stand a good chance of getting away but for one thing, the woodpecker spears him, and thereby saves many a dinner for himself.

Woodpeckers - Indian Spear

Indian Spear

Indian spear

Here is a primitive Indian fish-spear, such as the Penobscots used. To the end of a long pole two wooden jaws are tied loosely enough to spring apart a little under pressure, and midway between them, firmly driven into the end of the pole, is a point of iron. When a fish was struck, the jaws sprung apart under the force of the blow, guiding the iron through the body of the fish, which was held securely in the hollow above, that just fitted around his sides, and by the point itself.

Solomon Islander's Spear

Solomon Islander’s Spear

The tool with which the woodpecker fishes for a grub is very much the same. His mandibles correspond to the two movable jaws. They are knife-edged, and the lower fits exactly inside the upper, so that they give a very firm grip. In addition, the upper one is movable. All birds can move the upper mandible, because it is hinged to the skull. (Watch a parrot some day, if you do not believe it.) A medium-sized woodpecker, like the Lewis’s, can elevate his upper mandible at least a quarter of an inch without opening his mouth at all. This enables him to draw his prey through a smaller hole than would be needed if he must open his jaws along their whole length. Between the mandibles is the sharp-pointed tongue, which can be thrust entirely through a grub, holding him impaled. Unlike the Indian’s spear-point, the woodpecker’s tongue is barbed heavily on both sides, and it is extensile. As a tool it resembles the Solomon Islander’s spear. A medium-sized woodpecker can dart his tongue out two inches or more beyond the tip of his bill. A New Bedford boy might tell us, and very correctly, that the woodpecker harpoons his grub, just as a whaleman harpoons a whale. If the grub tries to back off into his burrow, out darts the long, barbed tongue and spears him. Then it drags him along the crooked tunnel and into the narrow shaft picked by the woodpecker, where the strong jaws seize and hold him firmly.


Lee’s Addition:

Lewis's Woodpecker (Melanerpes lewis) With Bug In Its Beak ©WikiC

Lewis’s Woodpecker (Melanerpes lewis) With Bug In Its Beak ©WikiC

I know and am acquainted with all the birds of the mountains, and the wild animals of the field are Mine and are with Me, in My mind. (Psalms 50:11 AMP)

This is Chapter II from The Woodpeckers book. Our writer, Fannie Hardy Eckstorm, wrote this in 1901. There are 16 chapters, plus the Forward, which are about the Woodpecker Family here in America. All the chapters can be found on The Woodpeckers page. I added photos to help enhance the article. In 1901, photography was not like today.

Woodpeckers belong to the Picidae – Woodpeckers Family.

The diet of woodpeckers consists mainly of insects and their grubs taken from living and dead trees, and other arthropods, along with fruit, nuts and sap from live trees. Ecologically, they help to keep trees healthy by keeping them from suffering mass infestations. The family is noted for its ability to acquire wood-boring grubs using their bills for hammering, but overall the family is characterized by its dietary flexibility, with many species being both highly omnivorous and opportunistic. The insect prey most commonly taken are those found inside tree trunks, whether they are alive or rotten, and in crevices in the bark. These include beetles and their grubs, ants, termites, spiders, and caterpillars. These may be obtained either by gleaning or, more famously, by excavating wood. Having hammered a hole into the wood, the prey is excavated by a long barbed tongue.

The ability to excavate allows woodpeckers to obtain tree sap, an important source of food for some species. Most famously, the sapsuckers (genus Sphyrapicus) feed in this fashion, but the technique is not restricted to these and others, such as the Acorn Woodpecker and White-headed Woodpecker, also feed in this way. It was once thought that the technique was restricted to the New World, but Old World species, such as the Arabian Woodpecker and Great Spotted Woodpecker, also feed in this way. (Wikipedia)

The tongue is mentioned on a video on The Woodpeckers page. This video will be referred to again and will be on The Woodpeckers page. It is being introduced here.

See:

Picidae – Woodpeckers Family

The Woodpeckers by Fannie Hardy Eckstorm

Gideon

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How To Know A Woodpecker – The Woodpeckers

Red-headed Woodpecker (Melanerpes erythrocephalus) ©USFWS

Red-headed Woodpecker (Melanerpes erythrocephalus) ©USFWS

 


Chapter I

HOW TO KNOW A WOODPECKER

The woodpecker is the easiest of all birds to recognize. Even if entirely new to you, you may readily decide whether a bird is a woodpecker or not.

The woodpecker is always striking and is often gay in color. He is usually noisy, and his note is clear and characteristic. His shape and habits are peculiar, so that whenever you see a bird clinging to the side of a tree “as if he had been thrown at it and stuck,” you may safely call him a woodpecker. Not that all birds which cling to the bark of trees are woodpeckers,—for the chickadees, the crested titmice, the nuthatches, the brown creepers, and a few others like the kinglets and some wrens and wood-warblers more or less habitually climb up and down the tree-trunks; but these do it with a pretty grace wholly unlike the woodpecker’s awkward, cling-fast way of holding on. As the largest of these is smaller than the smallest woodpecker, and as none of them (excepting only the tiny kinglets) ever shows the patch of yellow or scarlet which always marks the head of the male woodpecker, and which sometimes adorns his mate, there is no danger of making mistakes.

Blue Nuthatch (Sitta azurea) by Ian

Blue Nuthatch (Sitta azurea) by Ian

The nuthatches are the only birds likely to be confused with woodpeckers, and these have the peculiar habit of traveling down a tree-trunk with their heads pointing to the ground. A woodpecker never does this; he may move down the trunk of the tree he is working on, but he will do it by hopping backward. A still surer sign of the woodpecker is the way he sits upon his tail, using it to brace him. No other birds except the chimney swift and the little brown creeper ever do this. A sure mark, also, is his feet, which have two toes turned forward and two turned backward. We find this arrangement in no other North American birds except the cuckoos and our one native parroquet. However, there is one small group of woodpeckers which have but three toes, and these are the only North American land-birds that do not have four well-developed toes.

Acorn Woodpecker (Melanerpes formicivorus) by Reinier Munguia

Acorn Woodpecker (Melanerpes formicivorus) by Reinier Munguia

In coloration the woodpeckers show a strong family likeness. Except in some young birds, the color is always brilliant and often is gaudy. Usually it shows much clear black and white, with dashes of scarlet or yellow about the head. Sometimes the colors are “solid,” as in the red-headed woodpecker; sometimes they lie in close bars, as in the red-bellied species; sometimes in spots and stripes, as in the downy and hairy; but there is always a contrast, never any blending of hues. The red or yellow is laid on in well-defined patches—square, oblong, or crescentic—upon the crown, the nape, the jaws, or the throat; or else in stripes or streaks down the sides of the head and neck, as in the logcock, or pileated woodpecker.

Pileated Woodpecker by Lee

Pileated Woodpecker by Lee

There is no rule about the color markings of the sexes, as in some families of birds. Usually the female lacks all the bright markings of the male; sometimes, as in the logcock, she has them but in more restricted areas; sometimes, as in the flickers, she has all but one of the male’s color patches; and in a few species, as the red-headed and Lewis’s woodpeckers, the two sexes are precisely alike in color. In the black-breasted woodpecker, sometimes called Williamson’s sapsucker, the male and female are so totally different that they were long described and named as different birds. It sometimes happens that a young female will show the color marks of the male, but will retain them only the first year.

Williamson's Sapsucker (Sphyrapicus thyroideus) by Judd Patterson

Williamson’s Sapsucker (Sphyrapicus thyroideus) by Judd Patterson

Though the woodpeckers cling to the trunks of trees, they are not exclusively climbing birds. Some kinds, like the flickers, are quite as frequently found on the ground, wading in the grass like meadowlarks. Often we may frighten them from the tangled vines of the frost grape and the branches of wild cherry trees, or from clumps of poison-ivy, whither they come to eat the fruit. The red-headed woodpecker is fond of sitting on fence posts and telegraph poles; and both he and the flicker frequently alight on the roofs of barns and houses and go pecking and pattering over the shingles. The sapsuckers and several other kinds will perch on dead limbs, like a flycatcher, on the watch for insects; the flickers, and more rarely other kinds, will sit crosswise of a limb instead of crouching lengthwise of it, as is the custom with woodpeckers.

Northern Flicker (Colaptes auratus) Red-shafted ©WikiC

Northern Flicker (Colaptes auratus) Red-shafted ©WikiC

All these points you will soon learn. You will become familiar with the form, the flight, and the calls of the different woodpeckers; you will learn not only to know them by name, but to understand their characters; they will become your acquaintances, and later on your friends.

This heavy bird, with straight, chisel bill and sharp-pointed tail-feathers; with his short legs and wide, flapping wings, his unmusical but not disagreeable voice, and his heavy, undulating, business-like flight, is distinctly bourgeois, the type of a bird devoted to business and enjoying it. No other bird has so much work to do all the year round, and none performs his task with more energy and sense. The woodpecker makes no aristocratic pretensions, puts on none of the coy graces and affectations of the professional singer; even his gay clothes fit him less jauntily than they would another bird. He is artisan to the backbone,—a plain, hard-working, useful citizen, spending his life in hammering holes in anything that appears to need a hole in it. Yet he is neither morose nor unsocial. There is a vein of humor in him, a large reserve of mirth and jollity. We see little of it except in the spring, and then for a time all the laughter in him bubbles up; he becomes uproarious in his glee, and the melody which he cannot vent in song he works out in the channels of his trade, filling the woodland with loud and harmonious rappings. Above all other birds he is the friend of man, and deserves to have the freedom of the fields.


Lee’s Addition:

Red-bellied Woodpecker (Melanerpes carolinus) by J Fenton

Red-bellied Woodpecker (Melanerpes carolinus) by J Fenton

For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him: (Colossians 1:16 KJV)

This is Chapter I from The Woodpeckers book. Our writer, Fannie Hardy Eckstorm, wrote this in 1901. There are 16 chapters, plus the Forward, which are about the Woodpecker Family here in America. All the chapters can be found on The Woodpeckers page. I added photos to help enhance the article. In 1901, photography was not like today.

Woodpeckers belong to the Picidae – Woodpeckers Family.

“Most species possess predominantly white, black, brown, green, and red plumage, although many piculets show a certain amount of grey and olive green. In woodpeckers, many species exhibit patches of red and yellow on their heads and bellies, and these bright areas are important in signaling. The dark areas of plumage are often iridescent. Although the sexes of Picidae species tend to look alike, many woodpecker species have more prominent red or yellow head markings in males than in females.”

“Members of the family Picidae have strong bills for drilling and drumming on trees and long sticky tongues for extracting food. Woodpecker bills are typically longer, sharper and stronger than the bills of piculets and wrynecks; however their morphology is very similar. The bill’s chisel-like tip is kept sharp by the pecking action in birds that regularly use it on wood. Species of woodpecker and flicker that use their bills in soil or for probing as opposed to regular hammering tend to have longer and more decurved bills. Due to their smaller bill size, many piculets and wrynecks will forage in decaying wood more often than woodpeckers. The long sticky tongues, which possess bristles, aid these birds in grabbing and extracting insects deep within a hole of a tree. It had been reported that the tongue was used to spear grubs, but more detailed studies published in 2004 have shown that the tongue instead wraps around the prey before being pulled out.”

“Woodpeckers, piculets and wrynecks all possess zygodactyl feet. Zygodactyl feet consist of four toes, the first (hallux) and the fourth facing backward and the second and third facing forward. This foot arrangement is good for grasping the limbs and trunks of trees. Members of this family can walk vertically up a tree trunk, which is beneficial for activities such as foraging for food or nest excavation. In addition to the strong claws and feet, woodpeckers have short strong legs. This is typical of birds that regularly forage on trunks. The tails of all woodpeckers except the piculets and wrynecks are stiffened, and when the bird perches on vertical surfaces, the tail and feet work together to support it.” (Wikipedia)

See:

Picidae – Woodpeckers Family

The Woodpeckers by Fannie Hardy Eckstorm

Falling Plates

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