PHENOLOGY AND BREEDING BIOLOGY OF LAPWING (VANELLUS-VANELLUS) - RESULTS OF A 17 YEARS STUDY IN NW-GERMANY

Autor(en): KOOIKER, G
Stichwörter: Ornithology; SIZE; SUCCESS; Zoology
Erscheinungsdatum: 1993
Herausgeber: DEUTSCHE ORNITHOLOGIE-GESELL
Journal: JOURNAL FUR ORNITHOLOGIE
Volumen: 134
Ausgabe: 1
Startseite: 43
Seitenende: 58
Zusammenfassung: 
Phenology and breeding biology of Lapwing on arable land near the city of Osnabruck (Lower Saxony) were studied. A set of nearly complete data concerning the seasonal rhythm in a period of 17 years (1976-1992) was gathered. Arrival used to be from the middle of February till begin of March (xBAR = 26. 2.). Egg-laying begann on an average on 28. 3., the earliest egg-laying was observed on 11. 3. (1990), last clutch was seen on 25. 6. (1991). Clutch-presence extended from early April till middle of June. Hatching took place from late April to first of May (xBAR = 27. 4.; earliest date: 10. 4. 1990). Hatching of replacement clutches was observed till mid of June (xBAR = 19. 6.). Last hatching day was 25. 6. 1991. Adults with chicks occurred from end of April till mid of July, latest date was the 23. 7. (1988). Early summer migration started in average on 5. 6. The annual variation of the start of laying by Lapwing was related to mean monthly temperature and to the number of frost days in February and March. Average clutch size of 386 clutches was 3.83 eggs. Incubation took 24 to 28 days (average 26 days). From 221 clutches with 841 eggs 788 chicks hatched, from which was calculated a hatching rate of 93.7 % or 3.59 chicks per successful clutch. From 438 clutches (including the destroyed ones), in average 2.49 chicks hatched.
ISSN: 00218375
DOI: 10.1007/BF01661132

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