Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 7

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:  house sparrow
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
Studied the population and nesting records of House Sparrow Passer domesticus during winter in Yellampet village, Telangana. The ecological density of House Sparrow was investigated using fixed width transects. The density of sparrow vary from 15 to 335 per hectare in different transects. Bonferroni confidence interval was used to know the preference of location types i.e., houses, shops and hotels for foraging and nesting. Shops were used significantly more than expected according to availability of nest sites and also for foraging. A total of 81 active nests were recorded. The present study shows that a handful breeding population of House Sparrow harboring in Yellampet village.
We studied the population records of House Sparrow Passer domesticus 16th to 20th December 2011 during winter in Ramakrishna Beach Road Vishakhapatnam town, Andhra Pradesh. The ecological density of House Sparrow was investigated using fixed width transects. A total of 189 House sparrows were recorded. The present study shows that a notable population of House Sparrow in Beach Road.
Haematophagous mites are frequently found on nestling house sparrows (Passer domesticus), but their effects are poorly known. In this study we investigated whether natural levels of infection by two mite species Pellonyssus reedi and Ornithonyssus sylviarum have any fitness consequences on their hosts, including some physiological indices of chick health, body condition and fledging success. Among the haematological variables, thrombocytes and heterophils, but not lymphocytes and eosinophil granulocytes showed positive correlations with mite loads. There was also a significant decrease in the haematocrit values of the nestling sparrows with increasing mite intensity. We found no significant effect of ectoparasites on short- term indices of nestling fitness, such as body mass or fledging success. These results suggest that the blood-feeding mites of the studied house sparrow population mainly affected the haematological parameters of their hosts: They generated a non-specific immune response, with inflammatory processes and anaemia. On the other hand, parasite infestation seemingly has only weak influence on feather and skeletal growth of nestling sparrows, and no effect on fledging success and body mass.
In the commune of Łomianki near Warsaw, Poland (52°20'N, 20°50 'E), 12 samples of at least 19 nests we collected from wooden nest boxes between 1995-1999. The samples were unevenly distributed among months, but in total they represented each month of the year. In total 386 nests were analysed, including 283 of the tree sparrow (Passer montanus), 30 of the house sparrow (P. domesticus) and 73 nests of the genus Passer, but unidentified species. Using the Tullgren apparatus, 7692 imago fleas of 8 species were extracted from these nests. Only Ceratophyllus gallinae and C. fringillae were sufficiently abundant to analyse changes in their numbers. The number of C. gallinae was about 3.1 times higher than of C. fringillae. The abundance, prevalence and dominance of the two flea species were analysed in the annual cycle. Adult forms of the two flea species were leasl abundant in nests in April. Their numbers increased between May and July, slightly decreased in August and rapidly increased in September and October, reaching the maxima in all the indices, except for the dominance in the community of nest fauna. C. fringillae dominated in March and C. gallinae in September. In the winter months, adult C. gallinae occurred in relatively large numbers. In the nests of tree sparrow, fleas probably produced at least two and possible even three generations.
Birds and bats using buildings as a place of breeding or shelter.The presence of birds and bats was analysed in buildings intended for thermal refurbishment. Study material was collected in the years 2012-2016 in 336 buildings from 11 voivodships. For detailed analyses concerning birds, data from three voivodships were selected: kujawsko-pomorskie, łódzkie and mazowieckie. To determine differences in the location of bat roosts, buildings from all voivodships were compared. Bird nesting places and daytime bat roosts were divided into 22 locations. Regional differences in the occupation of buildings were analysed. For comparison, the analysed buildings were divided into churches, tenements, public buildings, and residential blocks. Buildings used by birds were also compared with respect to the degree of urbanization of their surroundings. Species-specific differences in their preference for occupying buildings of different types were analysed in birds. Birds were found in 78.9% of buildings and bats – in 8.9% of buildings. 2,250 bird nests in 265 buildings and over 1,000 bats in 30 buildings were inventoried. The bird species most often found in buildings were: the swift Apus apus (40.5%), house sparrow Passer domesticus (31.7%) and jackdaw Corvus monedula (9.9%). Bat species found in buildings included: the common noctule Nyctalus noctula, serotine bat Eptesicus serotinus, lesser horseshoe bat Rhinolophus hipposideros, pipistrelles Pipistrellus and long-eared bats Plecotus. The house sparrow most often inhabited buildings in kujawsko-pomorskie voivodship and the swift most often inhabited buildings in mazowieckie and łódzkie voivodships. Birds in kujawsko-pomorskie voivodship most often built their nests under roofs and birds from mazowieckie and łódzkie voivodships in flat roof spaces. A total of 31 bat roosts were located in 30 buildings in five different locations. Bats most often occupied flat roof spaces and attics and least often occupied crevices behind the gutter.
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.