or quality decreased. Beheler et al. (2003) showed a marked WSLS behavior for both males and females of Eastern Phoebes ( Sayornis phoebe ) in successive nesting within the same year, but not between years. In their study of breeding dispersal in the colonial LesserKestrel ( Falco naumanni
chick starvation in the treatment nests, and was less evident in years of naturally higher food supply.
The LesserKestrel ( Falco naumanni ) is a small falcon that breeds colonially and nests mainly in small cavities – on cliffs, on walls of abandoned quarries, under tiled roofs of rural and urban
A survey of the bird-parasitizing louse flies (Omithomyini) in Israel was canied out between 1990 and 1993. Specimens belonging to 13 species were examined. Seven species were previously known from Israel (lcosta ardeae (Macquart), I. meda (Maa), I. minor (Bigot), Ornithoica turdi Olivier, Ornithomya chloropus (Bergroth), Ornithophila metallica (Schiner), and Pseudolynchia canariensis (Macquart)), and six species are recorded as new to the Israeli fauna (Crataerina pallida Olivier, from swifts (Apus apus); Icosta zumpti Maa, from a buzzard (Buteo buteo); Ornithomya avicularia L., from a blackbird (Turdus merula) Ornithomya biloba Dufour, from swallows (Hirundo rustica) and sand martins (Riparia riparia) Ornithomya gigantea n. sp. (described here), from a blackcap (Sylvia atricapilla); and Ornithophila gestroi Rondani, from lesser kestrels (Falco naumanni)). Louse flies were found on 26 species of birds, 24 of which constitute new host records for Israel.
that breeding failure and mate loss (divorce or death) favored breeding dispersion, both in males and females of Black Kites ( Milvus migrans ). In their study of breeding dispersal in the colonial LesserKestrel ( Falco naumanni ), Calabuig et al. ( 2008 ) conclude that dispersal may result in part
- pecially if she is large, either in a courtship or agonistic context; but one also could envision simple mechanistic explanations, such as slow accumulation of dietary carotenoids, which might account for more intense red coloration in larger, possibly older sh. In a bird, the LesserKestrel, expression
pairs are raising fewer young, and residents leave areas at higher rates if the number and quality of other pairs’ nestlings there are low (Doligez et al., 2002 ). Lesserkestrels ( Falco naumanni ) use the reproductive success of other breeders to select breeding sites over successive breeding seasons
ob- tain sufficient food if they feed all day. However, the world is essentially stochastic. The day-to-day variation in the quantity of prey eaten depends upon the average number of prey eaten (the law of large numbers). Thus, predators such as thrushes Tur- dus spp., lesserkestrels Falco naumanni
- 298 .
( 2003 ).
Parasites and size-assortative schooling in three-spined sticklebacks . —
331 - 337 .
( 2012 ).
Under my wing, lesserkestrels and jackdaws derive reciprocal benefits in mixed
grand nombre d'autres qualificatifs lui sont donn6s, selon les lieux, tels que basir, abu abft sarqa, gabbftt, etc. 9) .Fcco naumanni. (Cr6cereHette, LesserKestrel, R6telfalke). Inutile en volerie, ce petit faucon roux uni 6tait dit 'uwaysaq « petit 'awsaq » (voir supra) et atlas « uni (de ton ». 10