قراءة كتاب Life Histories of North American Shore Birds, Part 1 (of 2)
تنويه: تعرض هنا نبذة من اول ١٠ صفحات فقط من الكتاب الالكتروني، لقراءة الكتاب كاملا اضغط على الزر “اشتر الآن"
Life Histories of North American Shore Birds, Part 1 (of 2)
duck, to fish or pick up something from the bottom, he would lie down on a tuft, stretching out his one leg and his one wing as if he would fully enjoy the rest after his exertions. The female for some moments was lying quietly and mutely in the middle of the pool; suddenly she began with increasing rapidity to whirl around on the surface of the water, always in the same little circle, the diameter of which was some 10 centimeters. As the male seemed to pay no attention to her alluring movements, she flew rapidly up to him—producing as she left the water a peculiar whirling sound with her wings and uttering short angry cries—pushed him with her bill, and then she returned to the water and took up her swimming dance. Now the male came out to her, and the two birds whirled around for some moments equally eager and with increasing rapidity. Uttering a short call, the female again flew to a tuft surrounded by water and waited some seconds in vain for the male; again she flew to the water to induce him with eager pushes and thumps to accompany her. They again whirled violently around, whereafter she, uttering a strong, alluring sound, flew back to the tuft, this time accompanied by the male—and the pairing immediately took place. In the matrimony of the grey phalarope the female only decides. She exceeds the male in size and brilliancy of plumage and has the decisive power in all family affairs. If she wants to shift her place of residence she flies up swift as an arrow with a commanding cry—which may be expressed as "pittss"—and if the male does not follow her at once she will immediately return and give him a severe punishment, which never fails to have the desired effect. It is a well-known fact that she completely ignores her eggs and young ones.
Nesting.—The same author describes the nesting habits of this species, in northeast Greenland, as follows:
It is peculiar, that the male has well-marked breeding spots before the breeding begins and certainly before the female has laid her first egg; but this fact has been proved by several solid examinations. June 26, 1907, I observed on the beach of the Bjergandeso in the Stormkap district, that the nest building was executed by the male. He was busy in building the nest on a low bank covered with short grass, while she paid no attention to his labor, but swam around the beach searching food. The male shaped a nest hollow by turning round his body against the ground on the place selected, having first by aid of the feet scraped away and trampled down the longest and most troublesome straws. He diligently used feet and bill at the same time to arrange the shorter fine straws, which are carefully bent into the nest hollow and form the lining of this. The nest was much smaller than that of Tringa alpina and contained one egg the next day. Along the beaches of a smaller lake not far from the ship's harbor I saw, June 30, three solitary swimming males, at least one of which showed signs of having a nest. I soon found this close to the place of residence of the male in question. The nest contained four fresh eggs and was built in exactly the same way as the before-mentioned nest. The male proved so far from being shy, that he could be driven to his nest and merely be caught by hand; having laid himself upon the nest he was still more fearless.
A breeding phalarope will lie motionless with his head pressed deep down against his back. He is almost fully covered by straws, which surround the nest, as he with the bill bends these over himself, besides he is so similar to the surroundings that no human eye is able to distinguish him from these, if the spot is not known beforehand.
July 9, 1907, I again found a phalarope's nest by the Bjergandeso; it contained four fresh eggs and was built a little differently from the two before-mentioned nests. These were found close to a lake on low banks covered with short grass, but this one was built on a tuft covered with long, withered grass, situated some 10 meters from the real lake, but surrounded by shallow water, that came from a little river running out from the lake and irrigating all the tufts, one of which contained the nest. This bird also kept very close on the nest, and did not leave it before I parted the long grass with my foot. When frightened up from the nest the bird for a short while lay screaming and flapping on the water not far from me; thereupon he flew away, silently and rapidly, to land on the opposite side of the lake. Having been absent for some five minutes he returned just as rapidly, flew a good way to the other side of the nest, sat down, and kept quiet for a couple of minutes, whereafter he again flew up and took the earth some 20 meters from the nest, which he then rapidly approached walking and swimming hidden by aquatic plants and tufts. All this was done in order to mislead me, who was lying some 15 meters from the nest without any shelter and therefore seen by the bird all the while.
C. W. G. Eifrig (1905) found the red phalarope breeding very commonly around Cape Fullerton and Southampton Island, Hudson Bay. "They nest around fresh water ponds, laying their eggs, without nesting material, in depressions in the sand or moss, often in lichens." John Murdoch (1885), on the other hand, says, at Point Barrow, Alaska, that—
The nest is always in the grass, never in the black or mossy portions of the tundra, and usually in a pretty wet situation, though a nest was occasionally found high and dry, in a place where the nest of the pectoral sandpiper would be looked for. A favorite nesting site was a narrow grassy isthmus between two of the shallow ponds. The nest is a very slight affair of dried grass and always well concealed.
In the Kotzebue Sound region Joseph Grinnell (1900) found three nests, of which he says:
The nests were all on higher ground and at a distance of 100 yards or more from the lagoons where the birds usually congregated for feeding and social purposes. The three nests agreed in situation, being rather deep depressions sunk into the tops of mossy hummocks. There was a thin lining of dry grasses, and in one case the drooping blades from an adjoining clump of grass partially concealed the nest from view from above.
Miss Maud D. Haviland (1915) relates her experience with the nesting habits of this species, at the mouth of the Yenesei River, Siberia, as follows:
I found the first nest on Golchika Island early in July. My attention was called to it by the male bird, which flew round uneasily. Even when the nesting ground is invaded, this phalarope is very quiet and not very demonstrative. He flits round the intruder with a peculiar silent flight, rather like a big red moth, while he utters his chirruping alarm note—"zhit zhit." This call is shriller than that of Phalaropus lobatus, and quite recognizable where the two species breed side by side. I sat down on a log of driftwood, and in about half an hour was able to flush the bird from four fresh eggs. This nest, however, was not placed very well for photography, for about 50 yards away was a turf hut, which a Russian family had just taken possession of for the summer, and I dared not leave the hiding tent or apparatus near the spot. On the following day I was more fortunate, and found a nest which was also on the island but about half a verst away. It was in rather a dryer situation than the last, but like all the nests of this species that I saw, the eggs lay on quite a substantial platform of dead grass. In other cases the sites were so wet that the bird must have been sitting actually in water—and the photographer would have had to do