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1

Using microsatellites to obtain genetic structure data for Red-backed Shrike [Lanius collurio]: a pilot study

100%
Pustjens A. Z., Peters J. L., Geertsma M., Gerats T., Esselink H.
Biological Letters
|
2004
|
tom 41
|
nr 2
95-101
2

Stan i zagrozenia populacji gasiorka Lanius collurio w Polsce

100%
Dombrowski A., Golawski A., Kuzniak S., Tryjanowski P.
Notatki Ornitologiczne
|
2000
|
tom 41
|
nr 2
139-148
3

Differences between the spring and autumn migration of the Red-backed Shrike Lanius collurio: record from the Eilat stopover [Israel]

100%
Tryjanowski P., Yosef R.
Acta Ornithologica
|
2002
|
tom 37
|
nr 2
4

Gąsiorki (Lanius collurio) z białym lusterkiem na skrzydle

100%
Chylarecki P.
Notatki Ornitologiczne
|
1988
|
tom 29
|
nr 3-4
5

Zageszczenie legowe gasiorka [Lanius collurio] w Gorach Sanocko-Turczanskich

84%
Cwikowska B., Cwikowski C.
Badania nad Ornitofauną Ziemi Przemyskiej
|
1996
|
tom 04
81-84
6

Occurrence of the Red-backed Shrike [Lanius collurio] depends on natural factors and mode of land use in the Quillow catchment, Germany

84%
Latus C., Schulz A., Kujawa K.
Biological Letters
|
2004
|
tom 41
|
nr 2
87-93
7

Wielkosc i umieszczenie gniazd gasiorka Lanius collurio w krajobrazie rolniczym wschodniej Polski

84%
Golawski A.
Notatki Ornitologiczne
|
2007
|
tom 48
|
nr 4
273-277
8

Predictions of changes in population size of the Red-backed Shrike [Lanius collurio] in Poland: Population viability analysis

84%
Takacs V., Kuzniak S., Tryjanowski P.
Biological Letters
|
2004
|
tom 41
|
nr 2
103-111
9
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Naziemne gniazdo gasiorka Lanius collurio na polnocnym Podlasiu

84%
Pugacewicz E.
Kulon
|
2009
|
tom 14
127-129
10

Zageszczenie gasiorka [Lanius collurio] w krajobrazie rolniczym Progu Lessowego [woj.przemyskie]

84%
Hordowski J.
Badania nad Ornitofauną Ziemi Przemyskiej
|
1996
|
tom 04
93-99
11

Pokarm gasiorka Lanius collurio w krajobrazie rolniczym wschodniej Polski

84%
Golawski A.
Notatki Ornitologiczne
|
2006
|
tom 47
|
nr 3
208-213
12

Male-biased sex of extra pair young in the socially monogamous Red-backed Shrike Lanius collurio

84%
Schwarzova L., Simek J., Coppack T., Tryjanowski P.
Acta Ornithologica
|
2008
|
tom 43
|
nr 2
235-239
Females of many socially monogamous bird species engage in — or even actively seek — copulations outside their social pair bond. However, in socially monogamous birds with low breeding abundance, such as the Red-backed Shrike, extra-pair paternity (EPP) was thought to be an exceptional and random incident. Drawing on samples collected in an unusually dense Red-backed Shrike population in the Czech Republic, we show through DNA microsatellite typing that among 65 chicks from 15 nests, 10 individuals (26.5%) had been sired by males other than the nest-attending social mate. All 10 extra pair young were of male sex. In all cases, genetic fathers of extra pair young stemmed from neighbouring territories. Extra pair fathers had significantly longer tarsi than social mates, indicating that female choice was a function of age-class dependent male body size. Our findings support sex allocation theory, which suggests that promiscuous females mating with higher quality males should produce mostly sons.
13

Mites (Acari, Mesostigmata) in the red-backed shrike Lanius collurio and great grey shrike Lanius excubitor nests

84%
Kamczyc J., Teodorowicz E., Gwiazdowicz D. J.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2011
|
tom 10
|
nr 2
The species composition of mesostigmatid mites in the red-backed shrike Lanius collurio and great grey shrike Lanius excubitor nests was studied in the Wielkopolska Region (Central Poland). Totally 15 samples (bird nests) were collected in May 1999. As a result of that study 81 mites were identified and classified to 13 species. The most numerous species was Alliphis halleri.
14

Preferencje siedliskowe jarzębatki Sylvia nisoria i gąsiorka Lanius collurio na Roztoczu Środkowym

84%
Polak M., Filipiuk M.
Ornis Polonica
|
2014
|
tom 55
|
nr 1
15

Zageszczenie gasiorka [Lanius collurio] w dolinie rzeki Wiar [Pogorze Przemyskie]

84%
Kunysz P.
Badania nad Ornitofauną Ziemi Przemyskiej
|
1996
|
tom 04
91-92
16

Zageszczenie gasiorka [Lanius collurio] w dolinie Sanu pod Sanokiem [woj.krosnienskie]

84%
Skowronski M.
Badania nad Ornitofauną Ziemi Przemyskiej
|
1996
|
tom 04
89-90
17

Biologia legowa gasiorka Lanius collurio w ekstensywnym krajobrazie rolniczym wschodniej Polski

84%
Golawski A.
Notatki Ornitologiczne
|
2006
|
tom 47
|
nr 1
1-10
18

Spatial and temporal relations between the Barred Warbler Sylvia nisoria and the Red-backed Shrike Lanius collurio in the Wielkopolska Region [W Poland]

84%
Kuzniak S., Bednorz J., Tryjanowski P.
Acta Ornithologica
|
2001
|
tom 36
|
nr 2
The Red-backed Shrike and the Barred Warbler are a pair of species engaged in breeding association. Whilst the arrival time of both species from their wintering grounds was not correlated, they differed in median arrival time by only one day. The majority of the Barred Warbler territories were located within those of the Red- backed Shrike, in both forest and farmland plots. Both species differed significantly in their selection of nest sites, at least in farmland. Unlike to the Red-backed Shrike (n = 297), the Barred Warbler (n = 60) preferred blackberry bushes and small deciduous thomless shrubs, and avoided elder, coniferous and hawthorn. The Barred Warbler nests were placed significantly lower than those of the Red-backed Shrike. The results show that no special ecological relationships exist as was suggested in earlier papers for other areas.
19

Does the Red-backed Shrike [Lanius collurio L.] benefit from nesting in the association with the Barred Warbler [Sylvia nisoria Bechst.]?

84%
Golawski A.
Polish Journal of Ecology
|
2007
|
tom 55
|
nr 3
The co-occurrence of Redbacked Shrikes (Lanius collurio) and Barred Warblers (Sylvia nisoria) was monitored during the years 1999–2003 at 343 ha of agricultural landscape of eastern Poland. Each year 25–31 pairs of Red-backed Shrikes and 3–8 pairs of Barred Warblers were nesting. In total, during five seasons, shrikes were nesting in the vicinity (within 50 m from the centre of the Barred Warbler territory) of 22 out of 24 (92%) warbler territories. The breeding success of the pairs nesting close to Barred Warbler territories was 89%, as compared with 61% for the remaining pairs and it was statistically significant. No difference was found in the clutch size between Redbacked Shrikes nesting close to Barred Warblers and far from them, but statistically significant difference was found in numbers of fledglings between them. The present results imply that close nesting of these two species reduces the risk of nest predation. This may be due to the aggression of Barrred Warblers towards potential predators, as this species actively attacks predators near the nest.
20

Food of the Red-backed Shrike Lanius collurio: a comparison of three methods of diet analysis

84%
Tryjanowski P., Karg M. K., Karg J.
Acta Ornithologica
|
2003
|
tom 38
|
nr 1
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