Western-Ukrainian Ornithological Station
Західно-Українська орнітологічна станція

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Зміст - Contents

1. Міграції птахів
    Bird migrations
2. Загрози мігруючим птахам
    Treats to migrating birds
3. Західно-Українська орнітологічна станція: "AVOSETTA"
    Western-Ukrainian ornithological station: "AVOSETTA"
4. Орнітологічний заказник "Чолгинський"
    "Cholginsky" ornithological reserve
5. Моніторинг за міграціями. Основні види робіт, методики та результати

Monitoring on birds migrations. Observations of migrations

The West-Ukrainian Ornithological station has deal with:

  • counts of birds during breeding and migration periods;
  • ringing of birds;
  • study of bird orientation;
  • collection of morphometric data;
  • protection of places where birds interrupt during migrations;
  • collection of data, which could promote the enlargement of the protected areas in Ukraine;
  • collection of data on rare bird species and habitats where they are occur.

The following methods were used:

1) for age and sex determination: Lars Svensson, Identification Guide to European Passerines; A.J.Prater et al., Identification and ageing of Holarctic Waders; Przemyslaw Busse, Klucz do oznaczania plci i wieku Europejskich ptakow wroblowatych;
2) for age, sex determination and moulting description: Lukas Jenni and Raffael Winkler, Moult and Ageing of European Passerines;
3) for counts realisation (pentad counts) methods proposed by Przemyslaw Busse (1973);
4) for study of orientation of birds - method proposed by Przemyslaw Busse (1995).

It was revealed that the place where we carry out our study is the unique one for breeding of birds and their stop during migrations. Therefore, thanks to fulfilled investigations of 1997, there was organised the ornithological reserve "Cholginsky" with the square of 820 ha there. One of the main parts of camp work is the ringing. 7567 birds belonged to 59 species were ringed during 5 years. (Table 1).

While ringing, the main morphometric characters, wing formula and moulting character were measured for 11000 of birds. The pentad counts are carried out from June 15th to October 15th every year.

There were observed 23 bird species placed to the National Red Data book there: Pygmy Cormorant (Phalacrocorax pygmeus), Black Stork (Ciconia nigra), Eurasian Spoonbill (Platalea leucorodia), Common Goldeneye (Bucephala clangula), Osprey (Pandion halietus), Hen Harrier (Circus cyaneus), Short-toed Eagle (Circaetus gallicus), Lesser Spotted Eagle (Aquila pomarina), Booted Eagle (Hieraaetus pennatus), White-Tailed Eagle (Haliaetus albicilla), Saker Falcon (Falco cherrug), Peregrine (Falco peregrinus), Common Crane (Grus grus), Kentish Plover (Charadrius alexandrinus), Black-winged Stilt (Himantopus himantopus), Oystercatcher (Haematopus ostralegus), Curlew (Numenius arquata), Whimbrel (Numenius phaeopus), Marsh Sandpiper (Tringa stagnatilis), Black-winged Pranticole (Glareola nordmanni), Great Black-Headed Gull (Larus ichthyaetus), Caspian Tern (Hydroprogne caspia), Great Grey Shrike (Lanius excubitor). The massive crowds of about 20 species were found. Several species were found to breeding only there in Lviv region. They are Great Ringed Plover (Charadrius hiaticula), Avocet (Recurvirostra avosetta), Northern Shoveler (Anas clypeata). Also, the successful breeding of Common Shelduck (Tadorna tadorna) was observed in 1996. In general, about 55-75 thousands birds of 157 birds species flight through this territory.

We have received 7 reports on birds we had ringed: from Portugal (on Gallinago galinago), from Great Britain, Poland and the Netherlands (on Calidris alpina), from Kroatia (on Numenius arquata), from Slovenia (on Acrocephalus schoenobaenus) and from Hungary (on Acrocephalus scirpaceus).

Our camp use rings of Ukrainian Centre of Bird Ringing (Kiev) and, if necessary, old ring of Soviet Union Centre of Bird Ringing (Moscow). In 1997, while visiting us by Gdansk ornithologists, we used the rings of Gdansk Ornithological Station.

Japan nets and traps were used for catching of birds. Mini-sized trap of helgoland type was set in 1997.

The results of hold investigations carried out gave us a possibility to analyze migrations of many species of birds, which occur in reserve. Dynamics of autumn migration of Wood Sandpiper are given being based on the results of birdwatchs during 1995-1998 (Figure 1).

On the base of morphometrical data we hold cluster analysis of Sedge Warbler (Acrocephalus schoenobaenus). We use methods proposed by L. Bal'ch'auskas (1990) analyzing 165 specimens of Sedge Warbler. All totality of data of length of wing was split into nine classes and divided into two groups with different probabilities.

64;65            66;67           68;69                 р > 0,1             
  |                |               |                                        
64;65            66;67           68;69                 p > 0,05
      \        /       \        /
       64;65;66         67;68;69                       p > 0,01
           |                |
       64;65;66         67;68;69                       p > 0,001 

We notice, that two different populations of Acrocephalus schenobaenus cross the territory of reserve in August-September. They differs not only by the length of the wing but also by the coloring of plumage.

Totallity of hybrids between Acrocephalus palustris and Acrocephalus scirpaceus were revealed by means of detailed analysis.

Members of the camp take place in two international projects of investigation of Waders: Wader Wetland Inland (WWI) and Tringa glareola - 2000, except their own investigation.

Both projects investigate migrations of Waders. WWI - project also studies territories that are suitable for breeding of waders (especially of Common Snipe, which was chosen as model species).

Color ringing of Wood Sandpiper was carried out within Project "Tringa glareola - 2000" in 1999. 99 specimens of Wood Sandpiper were ringed by color rings. Those rings were given by "KULING" - Waterbird Research Group. Table of therms and codes of color ringing are given (Table 2).

Station investigates orientation of Passerines according to the method proposed by P.Busse (1995). We hold 277 experiments with 13 species of birds during 5 years. Table with number of experiments, which were hold during 1996-1999 is given (Table 3).

Main directions of migrations of two species of Warblers (Acrocephalus scirpaceus and Acrocephalus schoenobaenus) were defined on the base of results of experiments. We show 4 main directions of migrations of birds on maps for each of species. South-West-West direction was chosen by most part of Acrocephalus scirpaceus and South-East-East direction was chosen by most part of Acrocephalus schoenobaenus. South-West-West direction was confirmed by trapping of two young Warblers (Acrocephalus scorpaceus and Acrocephalus schoenobaenus resp.) in Slovenia and Hungary (Figure 2).


6. Новини фауністики
    New data on fauna
7. Охорона території та видів
    Protection of species and habitat
8. Подяки
    Acknowledgements
9. Бібліографія
    Bibliography
 


E-mail: zoomus@franko.lviv.ua