The birds of Pasvik / E. I. Khlebosolov, O. A. Makarova, O. A. Khlebosolova [et al. ; English transl. Nikita Chernetsov]. - Ryazan : Golosgubernii, 2007. - 175 с. : ил., портр.

Scandinavia the Common Shelduck is a common species. It currently increases its numbers and expands its range (Hagemeijer & Blair 1997). In the Kola Peninsula this bird regularly breeds on Ainovy Isles. Since 2003, several Common Shelducks have been regularly recorded in the Kola bay, in 2006, two broods were found (Ivanenko 2006). Omnivorous dabbling ducks Dabbling ducks occur on the shore or in shallow water and forage in the water or on the bottom by dabbling. During foraging, they turn their body upside down so that often only the tail remains above water. Their diet includes aquatic plants and animals. Plant food consists o f green parts, seeds and bulbs o f aquatic plants are commonly taken. As for animal food, these ducks most eagerly take aquatic insects and their larvae, crustaceans, mollusks (Kolosov et al. 1975). Most dabbling ducks living in Pasvik are omnivorous. Eurasian Wigeons have mainly a plant diet. Mallards and Eurasian Teals take both plant and animal food. Plant food includes seeds and green parts of plants, whereas animal food consists of aquatic invertebrates. Animal food is especially important in summer. The Pintail uses different food, both plant and animal one, but in northern areas prefers animal items. Pintails eat larvae o f caddies flies, chironom ids, mollusks and other aquatic invertebrates. Among plant food, seeds o f aquatic plants play the most important role. The Shoveler also mainly eats animal food (Kolosov et al. 1975, Semenov- Tian-Shansky & Gilyazov 1991). Peculiarities o f diet and foraging behaviour o f ducks govern their choice of water body types. In Pasvik Eurasian Wigeons are mainly found on small olig- otrophic lakes, in the bays o f the Pasvik river and other shallow waters with pebble bottom , and avoids areas with well developed grass vegetation. The Mallard uses waters o f any type, mainly remaining in the belt o f coastal vegetation. Teals are mainly found in small eutrophic lakes and valley wetlands with rich coastal vegeta­ tion. This species also breeds in swampy bays o f rivers and large lakes (Zakoldaeva 2005; our data). Due to their low numbers, we failed to identify the typical features o f spatial distribution o f Pintails and Shovelers. In Lapland nature reserve the Pintail mainly lives in quiet sections o f rivers and streams with high banks grown by