tag:blogger.com,1999:blog-8278510471239667560.post3768625777334171461..comments2024-03-27T19:59:10.159+00:00Comments on Kensington Gardens and Hyde Park birds: Ralph Hancockhttp://www.blogger.com/profile/11686354797977020917noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-8278510471239667560.post-21202953539881925332015-02-20T19:02:11.788+00:002015-02-20T19:02:11.788+00:00Many thanks for this interesting information. It s...Many thanks for this interesting information. It seems that when the hymnodist Isaac Watts wrote<br /> Earth from afar has heard Thy fame,<br /> And worms have learnt to lisp Thy name<br />he didn't know what he was talking about.Ralph Hancockhttps://www.blogger.com/profile/11686354797977020917noreply@blogger.comtag:blogger.com,1999:blog-8278510471239667560.post-90355125421204175202015-02-20T16:40:00.593+00:002015-02-20T16:40:00.593+00:00“Worms do not possess any sense of hearing. They t...“Worms do not possess any sense of hearing. They took not the least notice of the shrill notes from a metal whistle, which was repeatedly sounded near them; nor did they of the deepest and loudest tones of a bassoon. They were indifferent to shouts, if care was taken that the breath did not strike them. When placed on a table close to the keys of a piano, which was played as loudly as possible, they remained perfectly quiet.<br /><br />Although they are indifferent to undulations in the air audible by us, they are extremely sensitive to vibrations in any solid object. When the pots containing two worms which had remained quite indifferent to the sound of the piano, were placed on this instrument, and the note C in the bass clef was struck, both instantly retreated into their burrows. After a time they emerged, and when G above the line in the treble clef was struck they again retreated. Under similar circumstances on another night one worm dashed into its burrow on a very high note being struck only once, and the other worm when C in the treble clef was struck. On these occasions the worms were not touching the sides of the pots, which stood in saucers; so that the vibrations, before reaching their bodies, had to pass from the sounding board of the piano, through the saucer, the bottom of the pot and the damp, not very compact earth on which they lay with their tails in their burrows. They often showed their sensitiveness when the pot in which they lived, or the table on which the pot stood, was accidentally and lightly struck; but they appeared less sensitive to such jars than to the vibrations of the piano; and their sensitiveness to jars varied much at different times. It has often been said that if the ground is beaten or otherwise made to tremble, worms believe that they are pursued by a mole and leave their burrows. I beat the ground in many places where worms abounded, but not one emerged. When, however, the ground is dug with a fork and is violently disturbed beneath a worm, it will often crawl quickly out of its burrow.<br /><br />The whole body of a worm is sensitive to contact. A slight puff of air from the mouth causes an instant retreat. The glass plates placed over the pots did not fit closely, and blowing through the very narrow chinks thus left, often sufficed to cause a rapid retreat. They sometimes perceived the eddies in the air caused by quickly removing the glass plates. When a worm first comes out of its burrow, it generally moves the much extended anterior extremity of its body from side to side in all directions, apparently as an organ of touch; and there is some reason to believe, as we shall see in the next chapter, that they are thus enabled to gain a general notion of the form of an object. Of all their senses that of touch, including in this term the perception of a vibration, seems much the most highly developed.”<br /><br />C. Darwin, “The Formation of Vegetable Mould, through the Action of Worms, with Observations on their Habits” (London, 1881), pp. 26-29Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8278510471239667560.post-27280332194123584272015-02-20T00:42:37.177+00:002015-02-20T00:42:37.177+00:00I've seen videos of worm-charming (or possibly...I've seen videos of worm-charming (or possibly gruntin') contests, from which is is clear that many different techniques are used, and at least some of them work quite well. Evidently it's the same with birds. Before today, I have seen Lesser Black-Backed Gulls repeatedly pecking the ground, more rapidly than they would if they were just picking up food, and I suppose that the repeated shock also brings up worms.Ralph Hancockhttps://www.blogger.com/profile/11686354797977020917noreply@blogger.comtag:blogger.com,1999:blog-8278510471239667560.post-62284317212982992082015-02-20T00:00:42.783+00:002015-02-20T00:00:42.783+00:00The town of Sopchoppy, Florida, has held an annual...The town of Sopchoppy, Florida, has held an annual "Worm Gruntin' Festival" since 2000. The event includes a ball and the crowning of a "Worm Gruntin' King and Queen".<br />From Wikipedia along with many theories of why worms are encouraged to surface by noises made by birds and animals, including humans. Most likely seems to be that the 'dance' of some birds imitates the sound of rain and worms love to come to the surface when it's wet.Johnnoreply@blogger.comtag:blogger.com,1999:blog-8278510471239667560.post-42833486871825862252015-02-19T22:19:11.848+00:002015-02-19T22:19:11.848+00:00A very interesting question. Sometimes, when a gul...A very interesting question. Sometimes, when a gull is doing the worm dance, you can see an immediate effect, as <a href="http://www.hancock.dircon.co.uk/wormdance.mov" rel="nofollow">here</a> -- this is one of the usual pair of Herring Gulls in the Diana enclosure. In favourable conditions it might be possible to see something similar with a Raven.Ralph Hancockhttps://www.blogger.com/profile/11686354797977020917noreply@blogger.comtag:blogger.com,1999:blog-8278510471239667560.post-33303047018250598322015-02-19T21:52:27.315+00:002015-02-19T21:52:27.315+00:00Interesting about the Lesser Black-backed Gull try...Interesting about the Lesser Black-backed Gull trying out a worm dance. I'm starting to wonder now if I have seen our Common Ravens attracting worms with a croaking sound, which they make while hunting around in the grass. I read that some sounds that cause worms to move may resemble the sounds of their natural underground predators approaching them.Johanna in Californianoreply@blogger.com