The Montagu's harrier, Circus pygargus, in Schleswig-Holstein

Authors

  • Volkher Looft Author
  • Detlev Drenckhahn Author
  • Hans-Joachim Lepthin Author

DOI:

https://doi.org/10.21248/corax.v2.237

Abstract

1. Schleswig-Holstein was colonised around 1870. The first confirmed breeding records date back to 1875/76 (ROHWEDER). In the following decades, the population increased significantly (until around 1920). In 1966, 49 pairs of Montagu's harriers bred in Schleswig-Holstein. A comparison of the current population with data from previous years reveals an alarming decline. This is mainly due to the disappearance of suitable breeding habitats.
Population size of the Montagu's harrier in 1966 in the federal states:
Schleswig-Holstein: 49 pairs.
Lower Saxony: approx. 70 pairs.
Southern Germany: approx. 5 pairs.
Mecklenburg, Brandenburg, Saxony-Anhalt: approx. 60 pairs.

2. Stay in the breeding area from around mid-April to mid-August. Breeding habitat: Fens, lake siltation zones and raised bogs. Nest location: Preferably in loose reed beds up to 1 m high. Start of breeding (average of 16 nests): 21–22 May (1966), after laying the first egg. 

Incubation period: 29–30 days. Nestling period: 31–32 days.

During the 1966 breeding season, a roosting flight of Montagu's harriers took place at two locations.

There was strong suspicion of polygyny in one area in 1966.

3. Migration begins at the end of July, reaches its peak in mid-August and then slowly declines. Extreme data are still available from the end of September. At the Bretolet Pass in Switzerland, the peak migration period is about ten days later. Some of the northern German Montagu's harriers choose the direct route over the Alps. A larger percentage of harriers take a south-westerly course through the European coastal countries. The return migration is faster than the departure. The earliest data from Schleswig-Holstein are between 15 and 25 April.

References

BECKMANN, K. O. (1951): Die Vogelwelt Schleswig-Holsteins, S. 74; 2. Aufl. 1964, S.87/88

BEHRENDS, O. (1961): Kollektiv overnatning af Hedehoge (c. p.) Flora og Fauna 67, S.201-202

BETTMANN, H. (1956): Überwintemde Weihen am Niederrhein, Orn. Mitt. 8, S. 130-133

BLUMAUER, H. (1957): Die Wiesenweihe als Brutvogel am Altrhein, Orn. Mitt. 9, S. 126

EMEIS, W. (1951): Veränderungen der Brutvogelfauna Schleswig-Holsteins in den letzten 100 Jahren, Mitt. F. A. G. 4, S. 25

GEYR, H., HAAS, G. (1957): Uber Geselligkeit von Weihen (Circus) auf dem Zug und am Schlafplatz. Vogelwarte 19, S. 53-55

GOETHE, KUHK (1951): Beringungsergebnisse. Vogelwarte 10, S. 72

GROSSE, A. (1955): Die Vogelwelt Norderdithmarschens, Mitt. F. A. G. 4, S. 66

HAAS, G. (1954): Ergebnisse der Beringung von Rohrweihen (Circus a. aeruginosus). Vogelwarte 17, S. 18-29

HAGEN, W. (1913): Die Vögel des Freistaates und Fürstentums Lübeck, S. 64 DOI: https://doi.org/10.1007/978-94-017-6669-2

HENNINGS, H. (1956): Uber die Verbreitung, den Lebensraum und einige Verhaltensweisen der Weihen in der Lüneburger Heide. Beitr. Naturk. Niedersachsens. Weigoldfestschrift, S. 150·-165

HOBBES, J. (1951): Wiesenweihenmännchen brütet. (Ref.) Vogelwelt 72, S. 213

JESPERSEN, P. (1947): Hedehogen (c. p.) som Ynglefugl i Danmark. Dansk Om. For. Tidsskr. 41, S. 61-62

KJARBOLLING (1852): Danmarks Fugle, Koppnhagen, S. 35

KNIPRATH, E., KRAMER, H. (1964): Vogelwelt 85, S. 153-154

KROHN, H. (1924): Die Vogelwelt Schleswig-Holsteins. S. 214-215

KUMERLOEVE, H. (1962): Die Brutvogelwelt der nordfriesischen Inseln Amrum und Föhr. Abh. und Verh. des Naturwiss. Ver. in Hamburg, VII, S. 27

MARTENS, J. (1964): Zur Nahrungsaufnahme der Weihen (Circus). Vogelwelt 85, S.27

MEBS, T. (1964): Greifvögel Europas, S. 56

MEIER, O. G. (1956): Die Wandlungen der Brutvogelwelt Trischens. Schrift z. Naturschutz in Dithmarschen 1

MÖLLER, J. (1957): Winterbeobachtungen der Wiesenweihe, Om. Mitt. 9, S. 231

NIETHAMMER, G. (1938): Handbuch der deutschen Vogelkunde, Bd. 2, S. 224-230

RASMUSSEN, C. (1937): Fra Hedehogens rige, Hirschsprungs Verlag, Kopenhagen

ROHWEDER, J. (1875): Die Vögel Schleswig-Holsteins, S. 6

SALOMONSEN, F. (1963): Oversigt over Danmarks Fugle, S. 51

THIOLLAY, J. M. (1966): La migration d'automne des rapaces diumes aux cols de Cout et Bretolet. Nos Oiseaux 28, S. 240-241

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Published

1967-03-15

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How to Cite

Looft, V., Drenckhahn, D. and Lepthin, H.-J. (1967) “The Montagu’s harrier, Circus pygargus, in Schleswig-Holstein”, CORAX, 2(1), pp. 1–9. doi:10.21248/corax.v2.237.