Wyniki wyszukiwania

1

Selected aspects of breeding biology in the Tree Sparrow Passer montanus saturatus [Stejneger, 1886] in South Korea

100%

Pinowska B., Pinowski J., Hahm K. H.

Acta Zoologica Cracoviensia

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1999

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tom 42

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nr 3

2

Repeatability and within-cluth variation in egg dimensions in a Hooded Crow Corvus corone cornix population

100%

Zduniak P., Antczak M.

Biological Letters

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2003

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tom 40

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nr 1

3

Nesting phenology and breeding success in Great Spotted Woodpecker Picoides major near Warsaw [Central Poland]

100%

Mazgajski T. D.

Acta Ornithologica

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2002

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tom 37

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nr 1

4

Intraspecific brood parasitism in Barn Swallows Hirundo rustica nesting in bunkers

84%

Czechowski P., Zduniak P.

Acta Ornithologica

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2005

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tom 40

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nr 2

163-164

During a four-year study of the breeding biology and ecology of an atypical population of Barn Swallows nesting in 13 abandoned post-war bomb shelters, the unexpected presence of foreign juveniles in active nests with nestlings was recorded on eight occasions. In five cases, single birds were noted, and in the other three, two foreign individuals were observed. The average age of the nestlings joined by foreign juveniles was 11.6 days (SE = 1.08, range 8-16), while the average age of the latter birds recorded with the nestlings was 23.2 ± 1.02 days (range 20-25). The mean distance between the hatching and parasitised nests was 0.9 ± 0.11 m (range 0.5-1.2). This unusual behaviour in swallows seems to be deliberate and is aimed at choosing a nest with nestlings in order to obtain extra food from experienced adult birds rather than an error caused by the darkness in the shelter.

5

Factors affecting brood patch development in Magellanic Penguins Spheniscus magellanicus

84%

Barrionuevo M., Marchisio N., Frere E.

Acta Ornithologica

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2016

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tom 51

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nr 1

Brood patches allow the transfer of heat to eggs for their successful embryonic development, and in many species determine egg temperature during incubation. We investigated brood patch development of Magellanic Penguins Spheniscus magellanicus in Isla Quiroga, Argentina, during 2012-2013. Here, we evaluate if brood patch development (in a narrow sense i.e. increase of the brood patch area and temperature measured with an electronic probe thermometer) varies according to laying date of the eggs, and with respect to adults' body condition and size, total clutch volume, and/or the sex of the adults. We found that brood patch temperature reaches its maximum when egg laying is finished, while brood patch area is fully developed starting from the end of the first quarter of the incubation period. The later the penguins started to breed the warmer the initial brood patches — when first egg is laid. Besides, the incubation period was shorter in penguins breeding late. Furthermore, adults in a good body condition had cooler initial brood patches than adults with poor body condition. In contrast, total clutch volume, body size index, and sex of the adults were not related to brood patch development. We conclude that initial brood patch temperature in Magellanic Penguins is associated with environmental factors, like laying date, and physiological attributes, like body condition.

6

Breeding biology of the endangered Blue Chaffinch Fringilla teydea polatzeki in Gran Canaria [Canary Islands]

84%

Rodriguez F., Moreno A. C.

Acta Ornithologica

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2008

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tom 43

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nr 2

207-215

The Blue Chaffinch is a passerine endemic to the Canary Islands and comprises two subspecies, one found on Tenerife (Fringilla teydea teydea) and the other on Gran Canaria (F. t. polatzeki). Even though the status of the Gran Canaria subspecies is endangered due to habitat loss and fragmentation, knowledge of its life history is anecdotal. We studied its breeding ecology during the years 1991-2004. New data are presented on breeding phenology, number of broods per year, egg biometrics, nest-site characteristics, breeding site fidelity and breeding success. In general, the breeding biology of the two subspecies were similar, with discrepancies in some previously reported traits, such as egg laying interval and frequency of second clutches. The Blue Chaffinch breeds earlier on Gran Canaria than on Tenerife: nests were begun mainly in the second fortnight of May. We did not find any relationship between the onset of egg laying and rainfall in March. However, the onset of the breeding period was negatively correlated with mean April temperature. The Blue Chaffinch showed preferences for a south-easterly nest orientation and for nest placement at the end of branches, where the nest is hidden by pine needles. Nests were located at various heights, from 5.5 to 23.8 m above the ground. 33% of females produced two broods a year. We found no differences in nest site characteristics between successful and unsuccessful nests, which suggests that other factors may be affecting the vulnerability of nests. The main cause of nesting failure (73.9%) was predation, due mostly to the Great Spotted Woodpecker.

7

Bi-paternal litter in Finn raccoon [Nyctereutes procyonoides Gray 1834] detected by polymorphic DNA markers

84%

Slaska B., Jezewska G.

Folia Biologica

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2008

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tom 56

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nr 3-4

193-195

8

Breeding biology of the Great Grey Shrike Lanius excubitor in W Poland

84%

Antczak M., Hromada M., Grzybek J., Tryjanowski P.

Acta Ornithologica

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2004

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tom 39

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nr 1

A Great Grey Shrike population was studied in two large plots (220 km² and 176 km²) in western Poland in 1999-2003. During the study period densities varied from 11.4 to 14.1 breeding pairs/100 km² but numbers were stable. In all, 180 Great Grey Shrike nests were found — 114 (63.3%) in conifers, 66 (36.7%) in deciduous trees. This population's reproductive parameters were relatively high in comparison to those of other European populations: mean clutch size — 6.6, hatching success — 92.5%, mean brood size — 5.72, mean number of fledglings per pair — 4.1, mean number of fledged young per successful pair — 5.25. Eggs (mean 27.1 × 19.9 mm) were found to be larger than reported in the literature. Nesting success was similar in both study plots, but there was slight seasonal variability: 41.0%-52.6% from 99 nesting attempts in the first plot, 42.1%-43.7% from 37 nests in the second. Predation was the main cause of nest losses. Plastic string used as nesting material appeared to be the most important cause of partial failures: 13 (8.2%) of a total of 147 nestlings surviving to fledging perished as a result of becoming tangled up in it. Nestlings rarely starved. Nests in linear habitats suffered significantly higher breeding losses (78.6%) than those in non-linear habitats (50%). The high fitness values obtained from this population were probably due to traditional farming practices, the sparing use of pesticides and the good potential food source.

9

Breeding biology of the Hooded Crow Corvus corone cornix in Warta River valley [W Poland]

84%

Zduniak P., Kuczynski L.

Acta Ornithologica

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2003

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tom 38

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nr 2

The study area (16 km2) in "Ujście Warty" National Park, W Poland — was the valley of a lowland river at its confluence with the River Odra, covered by a mosaic of grassy vegetation and willow scrub. 111 breeding attempts were recorded during 2000-2002. The mean nest density (3.2 nests/km2) was higher than that recorded by other authors in agricultural landscapes, but lower than in urban areas. The nest construction was adapted to fit young willow trees. The mean clutch size was similar to that recorded in other populations (4.43), but eggs were smaller (41.2 mm x 29.1 mm). The hatching success was lower (76%) in comparison with other studies, but the mean number of fledglings (2.15 per nest and 2.96 per nest in successful broods) was relatively high. The main reasons for losses were unhatched eggs, predators, starved nestlings and poor nest construction. We hypothesise that the smaller egg size and lower hatching success recorded in this population was due to unfavourable and unpredictable feeding conditions (floods) during the period of egg formation and egg laying. Later in the season, receding floodwaters laid bare areas suitable for foraging on invertebrates; waterfowl eggs also became readily available. Predation was low (lack of nonbreeding stock of Hooded Crow). As a result of good conditions during chick rearing, the overall reproductive output was relatively high in comparison with other populations.

10

Breeding biology and ecology of Whinchat Saxicola rubetra on abandoned farmland of Opole Province (SW Poland)

67%

Frankiewicz J.

Acta Zoologica Cracoviensia. Ser.A Vertebrata

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2008

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tom 51A

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nr 1-2

11

Breeding biology of the Great Grey Shrike [Lanius excubitor]: an analysis of nest record cards

67%

Olborska P., Kosicki J. Z.

Biological Letters

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2004

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tom 41

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nr 2

147-154

12

Habitat and nest site selection in the Common Gull Larus canus in southern Poland: significance of man-made habitats for conservation of an endangered species

67%

Skorka P., Martyka R., Wojcik J. D., Babiarz T., Skorka J.

Acta Ornithologica

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2006

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tom 41

|

nr 2

13

Abundance and breeding ecology of Brown Accentors Prunella fulvescens in Lhasa, Tibet

67%

Lu X.

Acta Ornithologica

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2006

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tom 41

|

nr 2

14

Breeding success and timing of the Pied Flycatcher Ficedula hypoleuca nesting in natural holes and nest-boxes in the Bialowieza Forest, Poland

67%

Czeszczewik D.

Acta Ornithologica

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2004

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tom 39

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nr 1

Broods of Pied Flycatcher nesting in natural tree holes and nest-boxes in Białowieża Forest (E Poland) were compared. Natural holes in primeval stands of the Białowieża National Park were located by following singing males, then monitored several times during the season. Nest-boxes situated in the managed part of the forest were inspected weekly. Flycatchers breeding in natural holes started laying eggs on average two days later (15 May) and laid smaller clutches (6.4 eggs) than birds breeding in nest-boxes (13 May and 6.7 eggs). The predation rate was significantly lower in natural holes (av. 47%) than in nest-boxes (av. 65%). This result indicates that generalisations regarding the evolution of adaptations to predation by nest-box populations should be treated with caution.

15

Breeding biology of Grey Wagtail Motacilla cinerea canariensis on Tenerife, Canary Islands

67%

Rodriguez B., Rodriguez A.

Acta Ornithologica

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2007

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tom 42

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nr 2

195-199

16

Breeding biology of the House Martin Delichon urbica in Algeria

67%

Lahlah N., Chabi Y., Banbura M., Banbura J.

Acta Ornithologica

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2006

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tom 41

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nr 2

17

Analysis of microsatellite polymorphism and genetic differentiation in urban and rural Kestrels Falco tinnunculus [L.]

67%

Rutkowski R., Rejt L., Szczuka A.

Polish Journal of Ecology

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2006

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tom 54

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nr 3

The European Kestrel Falco tinnunculus (L.) is commonly observed in urban-industrial environment. Colonization of cites by the species was shown to be interlinked with changes in its ecology and breeding biology. Such adaptations can lead to isolation of urban populations from rural birds. In this paper we investigated genetic differentiation between birds from centre of Warsaw (Centre Group), suburban area of the city (Suburban Group) and one rural area (Rural Group). We analyse polymorphism of six microsatellite loci in 56 kestrels. The results shown moderate and significant differentiation between Centre and Rural groups and intermediate differentiation among Suburban and two other groups. Although our study is based on small number of individuals and only one rural sampling site, it suggested some level of isolation between city and rural environment. We assumed that observed differentiation might be the result of Urban Island system of appearance and maintenance of kestrel population in Warsaw. We also suspect that suburban areas of the city form a ‘zone of admixture’, where genes from the city and non-urban populations are ‘meeting’.

18

The breeding ecology of the Greenfinch Carduelis chloris in urban conditions [study in Krotoszyn, W Poland]

67%

Kosinski Z.

Acta Ornithologica

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2001

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tom 36

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nr 2

Data were collected in a medium-sized town. During five years 342 nests were found. The densities of breeding pairs varied over this period between 4.5 and 5.9 p/10 ha. The distribution of breeding pairs was uneven throughout the study area. The preferred nest sites were the roadside trees, where 88.9% of the nests were built. The mean onset of egg-laying was 22 April (range 19-26 April). There was a tendency to start breeding earlier in warmer springs. The mean clutch size was 5.07 ± 0.74. There was a positive correlation between clutch size and the date of egg-laying. These data suggest that there was a compromise between the tendency towards earlier breeding and clutch size. In the study area the Greenfinch is a double-brooded species. Unlike other studies it was noted that the average clutch size increased in the second half of the breeding season. The maximum clutch size coincides with the second or replacement clutches. Hatching, fledging and breeding success were lowest when clutch sizes were largest. The nesting success estimated with the Mayfield and the "traditional" method was approximately similar (0.40 and 0.44 respectively). Cats and mustelids were probably the cause of most breeding failures. Corvids were not responsible for nesting failures.

19

Distribution, abundance and biology of the Antarctic Tern Sterna vittata Gmelin, 1789 on King George Island [South Shetland Islands]

51%

Jablonski B.

Acta Zoologica Cracoviensia

|

1995

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tom 38

|

nr 3

Ograniczanie wyników

Selected aspects of breeding biology in the Tree Sparrow Passer montanus saturatus [Stejneger, 1886] in South Korea

Repeatability and within-cluth variation in egg dimensions in a Hooded Crow Corvus corone cornix population

Nesting phenology and breeding success in Great Spotted Woodpecker Picoides major near Warsaw [Central Poland]

Intraspecific brood parasitism in Barn Swallows Hirundo rustica nesting in bunkers

Factors affecting brood patch development in Magellanic Penguins Spheniscus magellanicus

Breeding biology of the endangered Blue Chaffinch Fringilla teydea polatzeki in Gran Canaria [Canary Islands]

Bi-paternal litter in Finn raccoon [Nyctereutes procyonoides Gray 1834] detected by polymorphic DNA markers

Breeding biology of the Great Grey Shrike Lanius excubitor in W Poland

Breeding biology of the Hooded Crow Corvus corone cornix in Warta River valley [W Poland]

Breeding biology and ecology of Whinchat Saxicola rubetra on abandoned farmland of Opole Province (SW Poland)

Breeding biology of the Great Grey Shrike [Lanius excubitor]: an analysis of nest record cards

Habitat and nest site selection in the Common Gull Larus canus in southern Poland: significance of man-made habitats for conservation of an endangered species

Abundance and breeding ecology of Brown Accentors Prunella fulvescens in Lhasa, Tibet

Breeding success and timing of the Pied Flycatcher Ficedula hypoleuca nesting in natural holes and nest-boxes in the Bialowieza Forest, Poland

Breeding biology of Grey Wagtail Motacilla cinerea canariensis on Tenerife, Canary Islands

Breeding biology of the House Martin Delichon urbica in Algeria

Analysis of microsatellite polymorphism and genetic differentiation in urban and rural Kestrels Falco tinnunculus [L.]

The breeding ecology of the Greenfinch Carduelis chloris in urban conditions [study in Krotoszyn, W Poland]

Distribution, abundance and biology of the Antarctic Tern Sterna vittata Gmelin, 1789 on King George Island [South Shetland Islands]