|Title:||European Swallows Hirundo rustica in Botswana|
|Author(s):||Van den Brink B., R.G. Bijlsma & T.M. van der Have (eds.)|
The objectives of the Botswana Swallow Project 1993-95 were:
The report contains the final result of three Swallow expeditons to Botswana in the years 1992/93, 1993/94 and 1994/95. Three roosting sites were discovered, i.e. at the Gaborone Dam (up to 50,000), at the Shashe Dam (up to 5,000) and along the Boteti River near Maun (up to 3,000,000 in January 1994). All these sites were characterised by the presence of reedbeds in standing water. The importance of the Okavango Delta as a wintering site is not known.
Overall, numbers of European Swallows were very high in 1993/94, hig in 1992/93 and very small in 1994/95. These figures were correlated with rainfall patterns, with lowest numbers in years of drought. The proportion of juveniles was highest in 1993/94, and lowest in 1994/95 at all three study sites.
The report contains: