British Universities Film & Video Council

moving image and sound, knowledge and access

Hearing the Call

Synopsis
Communication in the human world is dominated by vision and by speech and hearing over a very narrow band of sound frequencies. In contrast, many animals have evolved methods of communication and prey detection that do not require vision, and instead use sounds that cannot be detected by the human ear - ultrasound. Bats perform extraordinary feats of emission, reception and sensory processing to overcome the inherent problems of echo-location, which they use in hunting and navigation. They are also able to capture prey by homing in on the ultrasonic signals insects use to communicate with potential mates. Insects in turn have developed short-pulse, short-interval ultrasonic signals which are less likely to be overheard by potential predators.
Series
Biology, Brain and Behaviour, Course Sd206
Language
English
Country
Great Britain
Medium
Video; Videocassette. Standard formats. col. 24 min.
Year of production
1992
Availability
Off-air recording licence
Sale; 2000 sale: £145.00 (+VAT +p&p)
Subjects
Biology
Keywords
animal behaviour; animal communication; bats; echolocation; insects; ultrasound

Production Company

Name

BBC Open University Productions

Distributor

Name

Open University Worldwide

Web
http://www.ouw.co.uk External site opens in new window
Phone
+44 (0) 1908 274066
Address
Walton Hall
Milton Keynes
MK7 6AA
Notes
NB. As of May 2016 Open University Worldwide are no longer distributing DVDs. They have posted this message on their website: ‘Unfortunately Open University Worldwide Limited has decided that product sales are no longer viable given the reduced funding to Higher Education institutions and diminishing demand for the products we have traditionally stocked. At present the Open University Students Association (OUSA) will continue to sell the "Good Study Guide", and we are in discussion with other possible distributors to continue to make The Open University’s products available for purchase. As soon as we have any information on other channels of distribution we will update this notice’. Some products are still available via second hand dealers on Amazon.co.uk

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