ML88884951
Автор
Дата
Локація
- Вік і стать
- Невідомий вік, невідома стать - X
- Звуки
- Поклик; Поклик у польоті
- Відтворення голосу
- Запис голосу не використовувався
Деталі спостереження
Minimum exact count. Very notable increase in HOLA sightings from previous surveys this winter. The vast majority of sightings were flyovers, generally heading north, as individuals or in small groups of up to 12. I detected all initially by calls: sweet "seet" and "seep-it" vocalizations, as well as occasional calls with a similar tone but more trill near the end, like "squrree?" In addition to the flyovers, I observed at least 9 birds land and forage on one southerly slope N of reach 3, one of the few areas without snow cover, then continue on to the north. It seems very clear that most of these detections represent birds in active migration. A more detailed account follows below. While at the photo point I heard a musical, sweet "seet" call twice, seemingly from above, but did not locate the vocalist (s). Finally I saw another HOLA at 0940, flying over the east end of reach 3 from the south, continuing to the N and then veering more NW. Noted mostly white underside contrasting with mostly black tail. At 0941 4 more HOLA approached from the S and these landed on a bare south-facing slope N of the stream in reach 3, where they made foraging motions. At 0951, 3 more flew in from the SE and landed with the previous group. At 0952, 2 more flew in from the SE and landed. At 0954, 1 more flew in from the SE, higher than the others. It landed on a fence wire at the top of the hill, N of the foraging group. At 0955 the foraging HOLA (or at least 8 of them) and the bird on the fence took off to the N with a tinkle of sweet "sip" calls. At 1011 1 more HOLA flew in from the S and dropped down toward the bare hillside where the others had foraged, though I did not determine if this individual landed. At 1026, while still near the bare hill, I heard calls and spotted a loose group of 6 more HOLA flying NNW, high (ca 10x shrub height). They were hard to spot at first, perhaps in part because I first heard them when they were directly overhead - as they flew farther north their white undersides stood out sharply against the blue sky. There could have been more I missed at this time (I did hear more) but the additional calls might have been coming from birds on the ground foraging - the sound seemed somewhat ventriloquial. At 1047, near the diversion, I heard but did not locate at least 1 more HOLA in flight. At 1051, I heard another while near the diversion and spotted it, a lone individual approaching from the SE and continuing to ENE, over 5 times shrub height. At 1100 while near the diversion, a loose group of 5 flew over, heading N for the Scratchgravels. At 1129 while at the rocky draw, 4 more flew by in a loose, long, vocal line, passing overhead a bit N of the stream. I watched 2 continued on until so distant I lost sight of them while following with the binoculars, heading upstream at a bearing between WNW and NW. At 1237 I heard calls of at least 2 more, apparently in flight, between the diversion and rocky draw, but could not locate them so did not at them to the total count. These were the first I had heard in a while. At 1239, I saw 6 fly over at ca 5-8x shrub height in a loose group, going downstream. Did not add these either based on their bearing. Between this time and 1330, I saw and heard a few more flyovers, generally heading upstream, but did not count any due to uncertainty about double-counting. Started counting again at 1330, when I saw 1 fly north. At 1335, I heard "seput" calls while in reach 4 and managed to locate 12 HOLA flying N in a strung-out line. I sighted them after they had passed overhead and they were just pale, winged specks in my binoculars. At 1358, 4 more flew over at the start point, heading N.
Технічна інформація
- Записуючий пристрій
- TASCAM DR-05
- Мікрофон
- Допоміжні пристрої
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