Pesticides and the Rook Corvus frugilegus in Scania, Sweden between 1955 and 1970

Oikos ◽  
1973 ◽  
Vol 24 (3) ◽  
pp. 377 ◽  
Author(s):  
Torsten Malmberg
Keyword(s):  
Corvus Frugilegus

Effect of spatial resolution of soil data on predictions of eggshell trace element levels in the Rook Corvus frugilegus

2016 ◽  
Vol 219 ◽  
pp. 288-295 ◽  
Author(s):  
Grzegorz Orłowski ◽  
Grzegorz Siebielec ◽  
Zbigniew Kasprzykowski ◽  
Wojciech Dobicki ◽  
Przemysław Pokorny ◽  
...  
Keyword(s):  
Trace Element ◽  
Spatial Resolution ◽  
Corvus Frugilegus ◽  
Trace Element Levels

Residues of chromium, nickel, cadmium and lead in Rook Corvus frugilegus eggshells from urban and rural areas of Poland

2014 ◽  
Vol 490 ◽  
pp. 1057-1064 ◽  
Author(s):  
Grzegorz Orłowski ◽  
Zbigniew Kasprzykowski ◽  
Wojciech Dobicki ◽  
Przemysław Pokorny ◽  
Andrzej Wuczyński ◽  
...  
Keyword(s):  
Rural Areas ◽  
Corvus Frugilegus ◽  
Urban And Rural Areas ◽  
Cadmium And Lead ◽  
Nickel Cadmium

Dominance, pair bonds and boldness determine social-foraging tactics in rooks, Corvus frugilegus

2013 ◽  
Vol 85 (6) ◽  
pp. 1261-1269 ◽  
Author(s):  
Jolle W. Jolles ◽  
Ljerka Ostojić ◽  
Nicola S. Clayton
Keyword(s):  
Social Foraging ◽  
Pair Bonds ◽  
Corvus Frugilegus ◽  
Foraging Tactics

scholarly journals Arthroderma tuberculatum and Arthroderma multifidum Isolated from Soils in Rook (Corvus frugilegus) Colonies as Producers of Keratinolytic Enzymes and Mineral Forms of N and S

2020 ◽  
Vol 17 (24) ◽  
pp. 9162
Author(s):  
Justyna Bohacz ◽  
Michał Możejko ◽  
Ignacy Kitowski
Keyword(s):  
Amino Acids ◽  
Culture Medium ◽  
Agricultural Practice ◽  
Ammonium Ions ◽  
Mineral N ◽  
Corvus Frugilegus ◽  
Keratinolytic Fungi ◽  
Sulfate Release ◽  
Proteins And Peptides

Keratinolytic fungi representing the genus Arthroderma that were isolated from the soils of a rook (Corvus frugilegus) colony were used as biological agents for the disposal of waste feathers. The aim of this study was to assess the abilities of Arthroderma tuberculatum and Arthroderma multifidum fungi with a varied inflow of keratin matter to biodegrade waste feathers. The evaluation was based on the determination of feather mass loss, the activity of keratinolytic enzymes, and the content of mineral N and S forms. It was found that the activity of protease released by the fungi contributed to an increase in the level of soluble proteins and peptides and the concentration of ammonium ions, as well as alkalization of the culture medium. Keratinase activity was significantly correlated with sulfate release, especially in A. tuberculatum cultures. The strains of A. tuberculatum fungi isolated from the soil with the highest supply of organic matter, i.e., strains III, IV, and V, had the lowest enzymatic activity, compared to the A. multifidum strains, but they released mineral nitrogen and sulfur forms that are highly important for fertilization, as well as nutritionally important peptides and amino acids. A. tuberculatum strains can be used for the management of waste feathers that can be applied in agricultural practice.

scholarly journals FOOD OF THE EUROPEAN ROOK (CORVUS FRUGILEGUS)

Science ◽  
1896 ◽  
Vol 3 (78) ◽  
pp. 918-919
Author(s):  
F. E. L. BEAL
Keyword(s):  
Corvus Frugilegus

scholarly journals Birds as the Feeders of Ticks (Acari, Ixodida) in Megalopolis of Kyiv

2014 ◽  
Vol 48 (5) ◽  
pp. 467-470
Author(s):  
I. V. Nebogatkin
Keyword(s):  
Developmental Stages ◽  
Urban Landscape ◽  
Parus Major ◽  
Ground Level ◽  
Urban Landscapes ◽  
Haemaphysalis Concinna ◽  
Corvus Frugilegus ◽  
Motacilla Alba ◽  
Taxonomic Groups

Abstract Birds as the Feeders of Ticks (Acari, Ixodida) in Megalopolis of Kyiv. Nebogatkin, I. V. - Data about ticks parasitizing on birds in the city of Kyiv were summarized. 117 birds and 27 nests were examined. Ticks were found on six species collecting food on the ground level: Great Tit (Parus major), White Wagtail (Motacilla alba), Rook (Corvus frugilegus), blackbird (Turdus merula), and Nuthatch (Sitta europaea). 56 Ixodidae specimens of four species from two genera were collected from the birds and their nests: Ixodes ricinus (Linnaeus, 1758); I. arboricola Schulze et Schlottke, 1930; I. lividus (Koch, 1844), Haemaphysalis concinna Koch, 1844. Th e role of birds as feeders of all developmental stages of ticks not only increases under conditions of urban landscape, but also becomes leading in the places with low population of small mammals. Ectoparasites of birds of the other taxonomic groups along with the ticks can play an important role in maintaining the circulation of pathogens of various aetiologies in the urban landscapes.

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