Bat Calls of Britain and Europe

2021 ◽  
Keyword(s):  
Species Identification ◽  
Acoustic Communication ◽  
Foraging Behaviour ◽  
Full Spectrum ◽  
Sound Analysis ◽  
Echolocation Calls ◽  
Social Calls ◽  
Time Expansion ◽  
Communication Equipment

A comprehensive guide to the calls of the 44 species of bat currently known to occur in Europe. Following on from the popular British Bat Calls by Jon Russ, this new book draws on the expertise of more than forty specialist authors to substantially update all sections, further expanding the volume to include sound analysis and species identification of all European bats. Aimed at volunteers and professional alike, topics include the basics of sound, echolocation in bats, an introduction to acoustic communication, equipment used and call analysis. For each species, detailed information is given on distribution, emergence, flight and foraging behaviour, habitat, echolocation calls – including parameters of common measurements – and social calls. Calls are described for both heterodyne and time expansion/full spectrum systems. A simple but complete echolocation guide to all species is provided for beginners, allowing them to analyse call sequences and arrive at the most likely species or group. The book also includes access to a downloadable library of over 450 calls presented as sonograms in the species sections.

The influence of wing morphology and echolocation on the gleaning ability of the insectivorous bat Myotis tricolor

2004 ◽  
Vol 82 (12) ◽  
pp. 1854-1863 ◽  
Author(s):  
Samantha Stoffberg ◽  
David S Jacobs
Keyword(s):  
Discriminant Analysis ◽  
Foraging Behaviour ◽  
Myotis Lucifugus ◽  
The Other ◽  
Wing Morphology ◽  
Echolocation Calls ◽  
Narrow Bandwidth ◽  
Mole Crickets ◽  
Wing Tips ◽  
Wing Tip

On the basis of its external morphology, Myotis tricolor (Temminck, 1832) should be able to both aerial-feed and glean. Furthermore, this bat is known to use broadband calls of short duration, reinforcing the prediction that it gleans. However, results from this study indicate that M. tricolor does not commonly glean. This conclusion was reached after studying the foraging behaviour of M. tricolor in a flight room. We presented M. tricolor with mealworms, moths, mole crickets, beetles, and cicadas in a variety of ways that required either gleaning and (or) aerial feeding. Although M. tricolor readily took tethered prey, it did not take any of the variety of insects presented to it in a manner that required gleaning. We therefore compared its wing morphology and echolocation calls with those of several known gleaners, Nycteris thebaica E. Geoffroy, 1818, Myotis lucifugus (Le Conte, 1831), and Myotis septentrionalis (Trouessart, 1897), and an aerial forager, Neoromicia capensis (A. Smith, 1829). In a discriminant analysis wing-tip shape was the only variable to provide some degree of discrimination between species, with M. tricolor having more pointed wing tips than the known gleaners. Discriminant analysis of echolocation-call parameters grouped M. tricolor with the other Myotis species and separated it from N. capensis and N. thebaica. However, M. tricolor did not use harmonics as did the other Myotis species. The apparent failure of M. tricolor to glean might therefore be due to its relatively pointed wings and narrow-bandwidth echolocation calls, owing to the absence of harmonics in its calls.

Habitat use by spotted bats (Euderma maculatum, Chiroptera: Vespertilionidae): roosting and foraging behaviour

1983 ◽  
Vol 61 (7) ◽  
pp. 1487-1491 ◽  
Author(s):  
M. L. Leonard ◽  
M. B. Fenton
Keyword(s):  
Ponderosa Pine ◽  
Foraging Behaviour ◽  
Meteorological Factors ◽  
Heavy Rain ◽  
Foraging Activity ◽  
Defensive Behaviour ◽  
Echolocation Calls ◽  
Light Levels ◽  
Flying Insects ◽  
Feeding Area

The purpose of this study was to collect data on the foraging and roosting behaviour of Euderma maculatum in the Okanagan Valley of southern British Columbia. The work was performed in the summer of 1981. Bats concentrated their foraging activity in open areas adjacent to ponderosa pine. None of the over 1000 attempted captures of prey we witnessed involved E. maculatum gleaning insects from ground or foliage, and we question the idea that big-eared bats are gleaners. Some attacks on flying insects involve steep dives to the ground, presumably in response to the defensive behaviour of prey. Spotted bats foraged alone, avoiding one another apparently by listening to the echolocation calls of conspecifics. Intrusion by one bat into the feeding area of another resulted in an altercation which stopped when one bat left the area. Heavy rain may have inhibited foraging flights, but there was no evidence that other meteorological factors or moonlight significantly inhibited foraging activity. The bats roosted alone in steep cliff faces and two radio-tagged individuals returned consistently to the same cliff face to roost. Departure was presumably influenced by light levels, as bats departed earlier on cloudy nights than on bright ones.

Echolocation calls from six species of microchiropteran bats in south-eastern Queensland.

1993 ◽  
Vol 16 (1) ◽  
pp. 35
Author(s):  
G. Jones ◽  
C. Corben
Keyword(s):  
Species Identification ◽  
Free Flight ◽  
Echolocation Calls ◽  
South Eastern ◽  
In The Wild

Echolocation calls were recorded from six species of microchiropteran bats (Rhinolophus megaphyllus, Miniopterus australis, M. schreibersii, Eptesicus pumilus, Chalinolobus gouldii and Scotorepens greyii) in the Brisbane area. All species were recorded in free-flight when searching for prey in the wild, with some also recorded in roosts and in the hand. Sonagrams are presented for use in species identification.

On the use of ultrasonic detectors for bat species identification and the calibration of QMC Mini Bat Detectors

1984 ◽  
Vol 62 (12) ◽  
pp. 2677-2679 ◽  
Author(s):  
Donald W. Thomas ◽  
Stephen D. West
Keyword(s):  
Species Identification ◽  
Species Level ◽  
Ultrasonic Detection ◽  
Echolocation Call ◽  
Echolocation Calls ◽  
Reliable Identification ◽  
Level Identification

Several ultrasonic detection and analysis systems are currently used to provide information on the echolocation calls of bats, in many cases permitting species-level identification. This note briefly describes these systems and alerts potential users of the inaccuracies of the simplest device, the superheterodyne QMC Mini Bat Detector. Without adequate calibration, the error in this latter detector is such that reliable identification of bats by echolocation call characteristics cannot be achieved.

Variation in the social calls of little brown bats (Myotis lucifugus)

1977 ◽  
Vol 55 (7) ◽  
pp. 1151-1157 ◽  
Author(s):  
M. B. Fenton
Keyword(s):  
Myotis Lucifugus ◽  
Careful Examination ◽  
Adult Males ◽  
Echolocation Calls ◽  
Adult Females ◽  
Controlled Conditions ◽  
The Social ◽  
Social Calls ◽  
In The Wild ◽  
Little Brown Bats

The social calls of 14 Myotis lucifugus (5 adult males; 5 adult females; 2 subadult males; 2 subadult females) produced under controlled conditions were more variable than echolocation calls made by hunting individuals in the wild. The social calls contained lower frequencies and in some cases were of longer duration than the echolocation calls. Careful examination of sound spectrographs of the calls indicated tremendous variability in details of frequency and time. Although several types of calls can be recognized, a discrete classification is not feasible because of the variability. The possible significance of the variation in the calls of these bats is discussed in the context of recognition of individuals by their vocalizations.

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