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Migration of Pallid Harrier across the central Mediterranean

East is clearly earlier than that in the central Soc.Turkey 14: 2-5.
Arroyo, B. E., & King, J. R. 1996. Age and sex differences in
Mediterranean; at Eilat, the majority occur
molt of the Montagu’s Harrier. J. Raptor Res. 30: 224-
between the first week of April and 10th May 233.
(Shirihai & Christie 1992; Yosef 1996) while at Beaman, M. 1973. Bosphorus migration, autumn 1971. Bull.
Cap Bon and the Strait of Messina comparable Orn. Soc.Turkey 8: 3-4.
— & Jacobsen, F. 1974. Bosphorus migration, autumn
dates would be between the fourth week of
1972. Bull. Orn. Soc.Turkey 10: 10-11.
April and about 15th May. This difference may Bendini, L. 1983. Specie ornitiche inanellate in altri paesi e
be related to the fact that many spring migrants riprese in Italian sino al 1977 compreso. Bollettino
dell’attività di inanellamento 1. I.N.B.S., Ozzano Emilia,
through Israel are males, which both migrate
Bologna.
earlier and have wintered farther north. Bortoli, L. 1967. Migration et baguage des Oiseaux a El
Finally, a double peak of immatures passing Haouaria. Nature de Tunisie. Numero Special, Mai 1967.
through the central Mediterranean is inter- Cardelli, C., & Corso, A. In prep. Bird migration over the
Strait of Messina.
esting. As shown in fig. 5, most juveniles pass
Corso, A. 2001. Raptor migration across the Strait of
through the Strait of Messina in late April/early Messina, southern Italy. Brit. Birds 94: 196-202.
May, but there is also a small passage of juven- — In prep.The influx of Pallid Harriers in Europe in 2000-
2002: a rare species recovering? Brit. Birds.
iles through Sicily in mid March, which peaks at
— & Iapichino, C. 1998. I rapaci svernanti in Sicilia negli
the end of that month or in early April (and is anni 1990-1997. Alula 5: 125-130.
often not apparent at Messina – hence it is not Ferguson-Lees, J., & Christie, D. A. 2001. Raptors of the
World. Christopher Helm, London.
obvious in fig. 5). This may reflect two different
Forsman, D. 1999. The Raptors of Europe and the Middle
wintering areas, one much closer (perhaps in East: a handbook of field identification. Poyser, London.
Tunisia?) than the other. It may also be the case Giordano, A. 1991.The migration of birds of prey and
that during the record influx in Europe during storks in the Straits of Messina. Birds of Prey Bull.4:
239-250.
2000-02, many juveniles wintered in North
Gustin, M., & Pizzari,T. 1998. Migratory pattern in the
Africa (Corso in prep.). genus Circus: sex and age differential migration in Italy.
Ornis Svecica 8: 23-26.
Acknowledgments Iapichino, C., & Massa, B. 1989. The Birds of Sicily. BOU
Checklist No. 11,Tring.
First and foremost, we wish to thank the Swiss association Kisling, M., Horst, B., & Hein, C. 1994. Die Beobacthung des
Fondation Ellis Elliot for their generous support of this and
Vogelzugs im Fruhjahr der Jahre 1990-1992 am Cap
other research projects.We wish to thank the following for Bon/Tunisien und bei Messina/Sizilien am Beispiel der
data, references, discussion and general help in many ways:
Greifvogel, Kraniche und Storche. Naturschutzbund
Giovanni Albarella, Daniele Aliffi, Dan Alon, Ian J. Andrews, Deutschland.
Marco Borioni, Valerio Cappello, Sergio Celesti, Gianluca
Panuccio, M., Agostini, A., & Massa, B. In prep. Is the island
Chiofalo, José Luis Copete, Roberto Gildi, Anna Giordano, of Ustica a hot-spot for the spring migration of
Marcello Grussu, Ricard Gutiérrez, Marco Gustin, Cristoph
raptors? Brit. Birds.
Hein, Carmelo Iapichino, Renzo Ientile, Lionel Maumary, Shirihai, H., & Christie, D. A. 1992. Raptor migration at
Kevin Mayer Giuliano Monterosso, Guido Premuda, Marco
Eilat. Brit. Birds 85: 141-186.
Preziosi, Deborah Ricciardi, Lucia Romano, Michael —,Yosef, R., Alon, D., Kirwan, G., & Spaar, R. 2000. Raptor
Sammut, Nir Sapir, I. & Dicky van den Velde, and many
Migration in Israel and the Middle East.A summary of 30
others. Special thanks are due to Rob G. Bijlsma, Metehan years of field research. IBRC & IOC, Eilat.
Ozen and Reuven Yosef for help with references and data.
Snow, D.W., & Perrins, C. M. (eds.) 1998. The Birds of the
Filippo Corso’s help was invaluable in various ways, and he Western Palearctic. Concise edition.Vol. 1. OUP, Oxford.
produced the figures for this paper.
Stronach, N. R. H. 1991.Wintering harriers in Serengeti
National Park,Tanzania. Afr. J. Ecol. 29: 90-92.
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Andrea Corso, Via Camastra, 10-96100 Siracusa, Sicily, Italy
Carmela Cardelli, P.zza Santa Maria La Nuova, is 433-98100 Messina, Sicily, Italy
246 British Birds 97 • May 2004 • 238-246