White Goshawk
نویسندگان
چکیده
منابع مشابه
Goshawk prey have more bacteria than non-prey.
1. Predators often prey on individuals that are sick or otherwise weakened. Although previous studies have shown higher abundance of parasites in prey, whether prey have elevated loads of micro-organisms remains to be determined. 2. We quantified the abundance of bacteria and fungi on feathers of woodpigeons Columba palumbus L., jays Garrulus glandarius L. and blackbirds Turdus merula L. that e...
متن کاملEffects of the Fukushima Daiichi nuclear accident on goshawk reproduction
Although the influence of nuclear accidents on the reproduction of top predators has not been investigated, it is important that we identify the effects of such accidents because humans are also top predators. We conducted field observation for 22 years and analysed the reproductive performance of the goshawk (Accipiter gentilis fujiyamae), a top avian predator in the North Kanto area of Japan,...
متن کاملHow, and Why, Is the Goshawk (accipiter Gentilis) Affected by Modern Forest Management in Fennoscandia?
-•The Northern Goshawk (Accipiter gentilis) is a common raptor in the boreal forest of Fennoscandia (Norway, Sweden and Finland), with a present breeding density of about 3 pr/100 km 2 of forest area. Several independent studies show that goshawk populations in Fennoscandia have declined by 50-60% from the 1950s to the 1980s. This decline coincides in time with an intensification of forest mana...
متن کاملA Sarcocystis Species from Goshawk (Accipiter gentilis) with Great Tit (Parus major) as Intermediate Host
Dne hundred and seventy five passerine birds from the Czech Republic were examined for the presence of sarcosporidia; auly 5 (all great tits) were positive for muscle cysts. Three great tits experimentally fed sporocysts (12.2 x 8.4, 11-13x 7.5-9 !lm) from a goshawk developed cysts while 2 house sparrows (Passer domesticus) were not infected. The cysts from great tits muscles were morphological...
متن کاملDoes Survey Method Bias the Description of Northern Goshawk Nest-site Structure?
Abstmrr: Past str~dies on the nesting habitat of northern goshawks (Accipiter gentilis) often relied on nests fomid opportunistically, either during timber-sale operations, by searching apparently "good goshawk habitat, or 1)y other search methods where areas were preselected based on known forest conditions. Therefore, a bias in the characterimtion of habitat surrounding northern goshawk nest ...
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ژورنال
عنوان ژورنال: Emu
سال: 1923
ISSN: 0158-4197
DOI: 10.1071/mu923142d