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

100%

Tryjanowski P., Karg M. K., Karg J.

Acta Ornithologica

2003

tom 38

nr 1

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Comparison of a diet of the Montagu's Harrier Circus pygargus L. during breeding season in two distinct plots in the Western Belarus

80%

Vintchevski D., Yasievitch A.

Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej

2009

tom 11

nr 3[22]

110-117

The study of diet composition of the Montagu`s Harrier (Circus pygargus (L) in two distinct breeding populations in 1996 in Hrodna and Smarhon` districts in Western Belarus have found different occurence of small mammals: 72,6% (n=2034) for the population #1 and 85,0% (n=254) for the population #2. Main prey in both populations was represented by vole species Microtus spp.: 68,5% and 78,3% for populations #1 and #2 accordingly. Significant difference was found in share of birds, mainly ground-nesting Passerines (17,5% and 12,6% for the population #1 and #2 accordingly) and large grasshoppers Tettigonia sp. (6,4% and 0,4% accordingly). Other prey categories (mice, shrews, hares, eggs of birds, lizards, dragonflies, large beetles and frogs) did not form an important part of the diet of these populations. We believe that opportunistic hunting behavior of the Montagu’s Harrier (which can easy switch on seasonally or locally abundant and accessible prey) is one of the reasons why the species did not form any subspecies throughout its wide range.

Small mammals of Kampinos National Park and its protection zone, as revealed by analyses of the diet of tawny owls Strix aluco Linnaeus, 1758

80%

Lesinski G., Romanowski J., Gryz J., Olszewski A., Kowalski M., Krauze-Gryz D., Olech B., Peplowska-Marczak D., Tarlowski A.

Fragmenta Faunistica

2013

tom 56

nr 1

Analyses of tawny owl pellets were used to determine the species composition and distribution of small mammals in Kampinos National Park and its protection zone (central Poland). The total material collected from 58 localities contained the remains of 11,235 vertebrates (including 8,335 mammals). The study revealed 29 species of small mammals of the following orders: Soricomorpha - 4, Chiroptera - 9, Rodentia - 14, Lagomorpha - 1 and Carnivora - 1. These included two bat species of special interest (Myotis myotis and Barbastella barbastellus) listed in the 2nd Annex to the Habitats Directive of the European Union. Muscardinus avellanarius, a rodent typical of broad-leaved woodland, appeared to be relatively common and abundant in suitable habitats. Species inhabiting wet habitats, Microtus oeconomus and Neomys fodiens, were found in many localities, whereas Arvicola amphibius was rarer and less abundant. Some important refuges of small mammals were found, mostly in strictly protected areas. Although the studies conducted to date in this area likely reveal a complete list of small species of Soricomorpha and Rodentia, it is possible that 3-5 species of Chiroptera and 2 small species of Carnivora may remain to be identified.

Ograniczanie wyników

1 Acta Ornithologica

1 Fragmenta Faunistica

1 Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej

1 Gryz J.

1 Karg J.

1 Karg M. K.

1 Kowalski M.

1 Krauze-Gryz D.

1 Lesinski G.

1 Olech B.

1 Olszewski A.

1 Peplowska-Marczak D.

1 Romanowski J.

1 Tarlowski A.

1 Tryjanowski P.

1 Vintchevski D.

1 Yasievitch A.

1 2013

1 2009

1 2003

Wyniki wyszukiwania

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

Comparison of a diet of the Montagu's Harrier Circus pygargus L. during breeding season in two distinct plots in the Western Belarus

Small mammals of Kampinos National Park and its protection zone, as revealed by analyses of the diet of tawny owls Strix aluco Linnaeus, 1758