Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 10

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  jastrzab golebiarz
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Die Adoption von jungen Wanderfalken Falco peregrinus beim Habicht Accipiter gentilis

100%
Trommer g.
Acta Ornithologica
|
1995
|
tom 30
|
nr 1
87-92
Methods of reintroducing Peregrine Falcons reared in captivity are divided into two kinds: 1) rearing in and flight from a nesting cage (artificial nest), and 2) intraspecific fostering or inter-specific cross-fostering with other species of raptors. The aim of the study described here was to transfer three Peregrine Falcon chicks to the nest of a Goshawk Accipiter gentilis and to compare the results with earlier experiments using this method. If the methodological assumptions defined in the study were complied with, all of the Peregrine chicks would be reared by the substitute parents - Goshawks - as their own young, and to the point where the young Peregrines were old enough to leave the nest area. This kind of reintroduction - of an ecological form which formerly nested in trees in forested ecosystems - was attempted successfully in 1994, and full photographic and cinematographic documentation of the effort was obtained.
2

Diet of the Goshawk Accipiter gentilis in Kampinoski National Park [Central Poland] in 1982-1993

84%
Olech B.
Acta Ornithologica
|
1997
|
tom 32
|
nr 2
191-200
Pluckings and prey remains of 1086 specimens of Goshawk prey colected during a whole year were examined. Prey items included almost all species of medium size birds (65 species) and mammals (6 species) occurring in the study area. Over 60% of the prey was captured in open areas, even though these amounted to less than 30% of total area. Diet composition and its diversity were changing between winter and the breeding season. Very small differences in the diet were found in comparison to data collected 36 years earlier from the same area. The main prey (over 50% both by number and by biomass) were the domestic pigeons, belonging to the bigest prey eaten by Goshawks completely and therefore the most efficient as food. High availability of this prey in Central Poland especially in early breeding period, confirmed by small difference between prey sizes of male and female, is a possible reason of high numbers of the Goshawk in this region.
3

Reintrodukcja sokola wedrownego [Falco peregrinus] metoda adopcji obcej w gniezdzie jastrzebia golebiarza [Accipiter gentilis]

84%
Wieland P.
Myślistwo Ptasze
|
1995
|
tom 01
31-32
4

Jastrząb – postrach gołębi

67%
Zawadzka D., Zawadzki J.
Brać Łowiecka
|
2008
|
nr 08
5

Density and productivity of Common Buzzard Buteo buteo and Goshawk Accipiter gentilis populations in Rogow, Central Poland

67%
Goszczynski J.
Acta Ornithologica
|
1997
|
tom 32
|
nr 2
149-155
Density and productivity of Common Buzzard and Goshawks populations were studied over a period of 11 breeding seasons in Central Poland. The mean densities of Buzzards and Goshawks were 1.73 and 1.63 pairs/10 km² of the whole area (105km²), respectively. Both studied species showed little variation of density during the study period. Breeding pairs constituted over 90% of all pairs recorded in the study area. Productivity of the Common Buzzard was greater than that of the Goshawk. Mean number of fledglings per statistical, breeding and successful pair were 1.67,1.78 and 2.34 in Buzzard, and 1.96, 2.08 and 2.76 in Goshawks. Between-year variation in number of fledglings was high in Buzzard population and moderate in Goshawks. Buzzard productivity was related to changes in food composition of this species, whereas in Goshawks no relationship between productivity and diet was found.
6

Jastrzab ciagle przesladowany

67%
Zdunczyk J.
Przyroda Polska
|
1993
|
nr 12
12
7

Ptaki drapiezne do polowan cz. II

59%
Krasowski W.
Brać Łowiecka
|
2005
|
nr 11
24-25
8

Z zycia golebiarza

59%
Wejckert J.
Myślistwo Ptasze
|
1999
|
tom 04
46-47
9

Koty zjadly zajaca, a lisa ustrzelili

51%
Bujanowski K.
Łowiec Polski
|
2000
|
nr 05
24-25
10

Jastrzab golebiarz

42%
Wasik S.
Las Polski
|
2003
|
nr 17
18
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.