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About Medford mail tribune. (Medford, Or.) 1909-1989 | View Entire Issue (April 10, 1960)
MAIL TRIBUNE, MtdforJ, Or. Sunday, Apt II 10, 1960 A ljvorlds ff jround By lynn M. Wotlilni in ma i iih hit minf , i Msny Thlngi Ptrtaining To Birdj are Unuiuil Unlike t!ie bones of other warm blooded snlmals, those of birds are hollow and filled with air. Buoyancy and ex treme lightness are built-in features that come as stand ard equipment. The legs of birds-even those of the do mestic fowls are covered with scales, a holdover from the dim past when birds were closely related to the reptiles. There are many other things pertaining to birds that are unusual. Not the least of which is the peculiar device, probably a "locking" system, whereby the perching birds can grip the branch of a tree, a wire or any other object merely by squatting; as long as the crouching position is maintained the locking de vice holds the bird in place. The bird can go to sleep perfectly confident that its hold on the support will be maintained without its con scious effort or intention. Merely by raising the body up It releases the grip. Merer Lies Down The bird, of necessity, must spend Its life in an upright position. That is it always sits; it never lies down to rest or sleep. Members of the duck fam ily keep their bodies in a horizontal position at all times, where they are sitting, laying or flying. Most other birds are more or less verti cal while resting, and horizon tal while in flight. When a bird comes to rest on a tree limb. It comes in horizontally. But when it alights, it again assumes a vertical position. Those members of the bird family that do not fly much remain urpight nearly all the time. Domestic ducks, chick ens, and all the barnyard fowls seldom take any posi tion except that of the verti cal. Another strange behavior pattern with most birds is egg-laying beyond the normal time of its duration. Of course a hen lays -eggs for only one purpose, and that reason is not because her owner makes more' money but only because her eggs are taken away from her. Will Slop Laying Normally she will stop lay ing when she has a nest-full of eggs, or as many as the can comfortably Incubate. She wants to raise a family, so she continues to lay, and as fast as they are taken away, she lays more, hoping all the time she can eventually catch up and get a nest full. To hatch the eggs is her primary ob jective. Many of the wild birds spe cies will react the same way up to a point, but they cannot be fooled for so long as the domestic hen. If the female bird has actually begun incu bation and her eggs are stol en, she often will begin lay ing again. No Explanation ' Maybe this doesn't appear like much of an accomplish ment, but it is, and no one has explained exactly what mechanism triggers the re newed egg-laying urge or what chemical change must be brought about to repeat the performance. - Some powerful influence, within the bird itself, goes back into gear again and a function that was discontin ued or arrested reactivates itself. This seems to be a ter rific strain on the bird's sys tem. By some mysterious method Nature tries to com pensate for the egg-loss. Sci entifically, it probably can be explained. But actually it's not so simple; there are still some pretty rounded corners to the seemingly abrupt an-Jtles. (Releaied by The Register and Tribune Syndicate, 1960) OP TO DIRECTORS Portland (UPD An attorney for Portland General Electric Company says that the board of directors, not stockholders, should decide if the firm should build the proposed Round Butte dam on the Deschutes river. 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