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1

Relationships between nestling hemoglobin concentration and brood performance until fledging in Great Tits Parus major and Blue Tits Cyanistes caeruleus

100%
Kalinski A., Banbura M., Gladalski M., Markowski M., Skwarska J., Wawrzyniak J., Zielinski P., Banbura J.
Acta Ornithologica
|
2017
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tom 52
|
nr 2
2

Body condition parameters of nestling Great Tits Parus major in relation to experimental food supplementation

100%
Banbura J., Banbura M., Gladalski M., Kalinski A., Markowski M., Michalski M., Nadolski J., Skwarska J., Zielinski P.
Acta Ornithologica
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2011
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tom 46
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nr 2
Amount of food supplied to nestlings by their parents is considered to affect the development of nestling physiological condition. In this study we supplied parental Great Tits Parus major with extra food, larvae of Tenebrio molitor, put into feeders close to nest-boxes, assuming that this should facilitate parental care and, as a consequence, nestling nutrition. The following nestling characteristics measured 13 days after hatching were analysed: body mass, haematocrit, blood concentrations of haemoglobin, glucose and triglycerides, heterophil-to-lymphocyte ratio (H/L), and patagium swelling after PHA injection. Nestlings from extra food broods were significantly heavier than control ones. They also had lower H/L, which indicated lower stress. No other variable was significantly affected by the experiment. Possibly, the rainy weather and non-restrictive natural trophic conditions during the experiment caused weakening of the net benefits from extra food.
3

Variation in egg sizes of Pied Flycatchers Ficedula hypoleuca in central Poland: a long-term decreasing trend

100%
Skwarska J., Kalinski A., Wawrzyniak J., Banbura M., Gladalski M., Markowski M., Zielinski P., Banbura A., Banbura J.
Acta Ornithologica
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2015
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tom 50
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nr 1
4

Differences in the breeding success of Blue Tits Cyanistes caeruleus between a forest and an urban area: a long-term study

100%
Gladalski M., Banbura M., Kalinski A., Markowski M., Skwarska J., Wawrzyniak J., Zielinski P., Czyzewska I., Banbura J.
Acta Ornithologica
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2017
|
tom 52
|
nr 1
5

Long-term variation in laying date and clutch size of Pied Flycatchers Ficedula hypoleuca in Central Poland

100%
Skwarska J., Kalinski A., Wawrzyniak J., Markowski M., Mikus W., Banbura M., Gladalski M., Zielinski P., Banbura J.
Polish Journal of Ecology
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2012
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tom 60
|
nr 1
Long-term annual variation in the timing of egg laying, clutch size and relationship between clutch size and the progress of the season was analysed for the Pied Flycatcher Ficedula hypoleuca nesting in a mature deciduous woodland in central Poland in 2002–2010. The earliest mean egg laying date was 8 May (2005) and the latest 18 May (2008), resulting in the maximum difference of 10 days between averages for years. No long- term trend was found. The total average of annual mean laying dates was 12 May. For all nine years the average of annual mean clutch sizes was 6.54 ± 0.28 (SE) eggs; for individual seasons mean clutch size ranged from 6.0 to 7.1 eggs but differences among years were not significant. Clutch size clearly tended to decline with the progress of the breeding season within years, with some variation between years; correlation for pooled standardized data was –0.49. This supports the idea that in long-distance single-brooded passerine birds clutch size should decrease with the course of the breeding season due to progressively deteriorating food conditions.
6

Parallel variation in haemoglobin concentration in nestling-rearing Blue Tits Cyanistes caeruleus and Great Tits Parus major

100%
Kalinski A., Banbura M., Skwarska J., Wawrzyniak J., Zielinski P., Gladalski M., Markowski M., Banbura J.
Acta Ornithologica
|
2012
|
tom 47
|
nr 2
High metabolic rates of birds demand an efficient oxygen transport system; this is ultimately based on the oxygen carrying capacity of haemoglobin. Therefore patterns of variation in blood haemoglobin content of wild birds are an important aspect of functional ecology. In this paper we report results concerning variation in haemoglobin concentration in the blood of adult Blue Tits Cyanistes caeruleus and Great Tits Parus major during the nestling rearing period (days 7-15 of nestlings life) of first broods in central Poland in 2003-2009. The most important findings of this study are: (i) average haemoglobin concentration in blood differs between Blue Tits and Great Tits, with higher values in Blue Tits; (ii) males differ from females in both these species, with higher values in females, and (iii) there is also significant variation among years, with parallel tendencies for both species. We explain the patterns of haemoglobin content variation in adult tits by differences in metabolic demands for oxygen transported by blood. The demands are higher for the smaller-bodied species (Blue Tits), heavier working sex (females) and in years with worse physical and trophic conditions, though only non-significant relationships with weather conditions (temperature and rainfall) or food availability (measured by frassfall) were found during our long-term study.
7

Long-term changes in population density of nest-box breeding Great Tits and Blue Tits in two contrasting habitats in Central Poland

100%
Gladalski M., Wawrzyniak J., Banbura M., Kalinski A., Markowski M., Skwarska J., Zielinski P., Banbura J.
Polish Journal of Ecology
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2016
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tom 64
|
nr 3
Urbanization affects the ecological and behavioral traits of various species of animals, including birds.We present results concerning long-term fluctuations in breeding densities of nest-box populations of the Blue Tit Cyanistes caeruleus and the Great Tit Parus major in two, structurally and floristically contrasting types of habitat (an urban parkland and a rich deciduous forest) located 10 km apart, in central Poland. This study was conducted in 1999–2012 in the parkland site and in 2002–2012 in the forest site. We found a strong correlation of year-to-year changes in breeding densities of Great Tits between the parkland site and the forest site and a lack of such a correlation in Blue Tits. Breeding densities of Great Tits were much higher in the parkland than in the forest area every year during the study period. Annual changes in breeding densities were not correlated between the species studied. The North Atlantic Oscillation Index (NAO-winter index) tended to influence the density dynamics of the two bird species in the forest area but not in the parkland area.
8

Consequences of experimental changes in the rearing conditions of Blue Tit Cyanistes caeruleus and Great Tit Parus major nestlings

81%
Banbura J., Banbura M., Gladalski M., Kalinski A., Marciniak B., Markowski M., Michalski M., Nadolski J., Skwarska J., Wawrzyniak J., Zielinski P.
Acta Ornithologica
|
2013
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tom 48
|
nr 2
Physiological functions of growing nestlings are thought to be traded-off in relation to rearing conditions, with the resulting physiological state of fledglings having important long-lasting consequences for their fitness. By manipulating brood size up and down, and, separately, by supplying additional food (mealworms — larvae of Tenebrio molitor) we tested if alterations of the rearing conditions would influence nestling performance in Blue Tits Cyanistes caeruleus and Great Tits Parus major. Brood size manipulation affected body mass, heterophil-to-lymphocyte ratio (H:L) and fledging probability in both species and the level of triglycerides in nestling Great Tits. Extra food supply influenced only fledging probability, with no other effect on indicators of nestling performance. An effect on nestling body mass and a lack of effect on cell-mediated immune response in the brood-size experiment suggest that nestlings in enlarged broods sacrificed growth to maintain immunity. In general, effects of both types of experiments were probably to some extent masked by specific character of the study site — an urban parkland with high human-induced disturbance.
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