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Miniopterus schreibersii is a cave-dwelling bat species with a wide distribution in the western Palearctic spanning southern and central Europe, North Africa, Anatolia, the Middle East, and the Caucasus. We investigated the social structure and its effects on the genetic makeup of this species, using 10 nuclear microsatellite markers and a partial fragment of the mitochondrial cytochrome b gene. Samples were examined from the species' entire circum-Mediterranean range. Local structuring that was previously detected among populations of M. schreibersii using mitochondrial markers was not observed for microsatellite markers, indicating male-biased dispersal for the species. Some support was found for postglacial expansions in Europe, with Anatolia potentially acting as the primary refugium during the Last Glacial Maximum (LGM). However, support for this hypothesis is not as strong as that previously detected using mitochondrial DNA markers. This is likely due to the diminishing effect of male-mediated dispersal, replenishing the nuclear diversity faster than the mitochondrial diversity in regions that are relatively far from the glacial refugia.

Several recent impact studies reveal that in some localities industrial wind farms are associated with high numbers of bat fatalities. In Europe, most published studies have been conducted in the northwest, while bat diversity generally is much higher in the south of the continent. Here we provide evidence from a post-construction monitoring study conducted in north-eastern Greece between August 2009 and July 2010. Overall, 88 turbines from nine wind farms were intensively searched, and 181 dead and two injured bats were found in their proximity. The most frequently killed species were Nyctalus leisleri (n - 56), Pipistrellus pipistrellus/ P. pygmaeus (53), P. nathusii (35), Hypsugo savii (23) and N. noctula (10). Fatality rates were high from June to September. Most killed bats were adult males. Observed differences in the temporal pattern of fatalities among species may be associated with differences in their behaviour and distribution. Sex segregation with males at higher elevation, where the wind farm...

The analysis of social calls emitted by bats in the Pipistrellus genus has played an important role in assessing cryptic diversity and in investigating reproductive strategies and foraging ecology of these vespertilionids. Our study deals with social call structure of a recently discovered species, Pipistrellus hanaki. Because it shares a common ancestor with P. pygmaeus, we hypothesized that as in the other species from this group social call structure in P. hanaki retains the basic design observed in other bats from the same genus. We also hypothesized that as in other pipistrelles such calls fulfill context-dependent functions, being used by both foraging and mating bats for different purposes. However, we found that these calls have a structure rather different from that seen in most pipistrelles. Two different types of multi-harmonic, broad-band and long-duration social calls were identified, with distinctive temporal structures. Single component, frequency modulated-quasi constant frequency (FM-QCF) calls were emitted during summer at foraging sites where feeding buzzes were regularly produced. In autumn, when feeding buzz rates decreased and males caught at recording sites had prominent testes, a second type of single or multi-component calls with a fluctuating frequency over time was more frequent. Unlike the typical multi-component social calls recorded in several Pipistrellus species, our results suggest that social calls used by foraging or mating P. hanaki have markedly different structures. Because social calls of bats are speciesspecific and may function in reproductive isolation, we hypothesize that differentiation of social calls in P. hanaki has been associated with the divergence of this species from P. pygmaeus.

We describe here an automated surveillance system that was installed in a bearded vulture (Gypaetus barbatus) nest in Crete during 2003-2006 with the aim of studying siblicide in this species. The system caused only minimal levels of disturbance to the birds and was capable of operating autonomously for more than 1 week. It comprised (1) a nest monitoring subsystem (camera, microphone, battery with a charge controller and a transmitter together with an antenna), which was supported by a solar panel, and (2) a recording subsystem (antenna receiver, video signal controller and a remote controlled PC through a GSM modem) that compressed the audio-video signal and provided real time monitoring. Two-egg clutches with a 7-day laying and hatching interval were recorded while hatching asynchrony was also determined through an analysis of the bioacoustic data. Food delivery rate and number of feeds to the first chick increased after the hatching of its sibling although not significantly so. Of the aggressive interactions recorded, 98% were initiated by the dominant chick and resulted in an average of 246 ± 157 peckings per day. Supplementary feeding did not produce any significant correlation between feeding rate and sibling aggression. The second chick survived 5 days and died as a result of starvation accelerated by sibling aggression. Intervention measures aimed at increasing the survival chance of the second chick should be undertaken when the latter is 1-2 days old.