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The World of Darkness at the New York Zoological Park

The World of Darkness at the New York Zoological Park H. BRADFORD H O U S E ’ & JAMES G. DOHERTY’ ‘Curator, and ‘Associate Curator of Mammals, New York Zoological Society, Bronx, New York 10460, U S A In June 1969 the New York Zoological Society opened the ‘World of Darkness’, a building devoted to the exhibition of nocturnal birds, reptiles and amphibians, but primarily mammals. We had already made an extensive study of the responses of different species to varying colours and intensities of light, and as a result of these experiments ( 1 ) were able to determine suitable time-clock controlled light cycles to reverse day and night activity patterns. A reflected light-meter reading of approximately 75.5 metrecandles (7 ft candles) measured from 50 cm in front of the viewing glass and 1-3 m above the public floor was generally found to work well and provided adequate viewing light. With most species it was possible to stimulate daytime activity by simply reversing normal high and low light intensities of white, blue or green. Red light was used for species particularly sensitive to daylight. Five years’ experience has dictated changes and improvements. An introductory ‘day and night’ exhibit which had worked well on an experimental basis http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Zoo Yearbook Wiley

The World of Darkness at the New York Zoological Park

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References (2)

Publisher
Wiley
Copyright
Copyright © 1975 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0074-9664
eISSN
1748-1090
DOI
10.1111/j.1748-1090.1975.tb01348.x
Publisher site
See Article on Publisher Site

Abstract

H. BRADFORD H O U S E ’ & JAMES G. DOHERTY’ ‘Curator, and ‘Associate Curator of Mammals, New York Zoological Society, Bronx, New York 10460, U S A In June 1969 the New York Zoological Society opened the ‘World of Darkness’, a building devoted to the exhibition of nocturnal birds, reptiles and amphibians, but primarily mammals. We had already made an extensive study of the responses of different species to varying colours and intensities of light, and as a result of these experiments ( 1 ) were able to determine suitable time-clock controlled light cycles to reverse day and night activity patterns. A reflected light-meter reading of approximately 75.5 metrecandles (7 ft candles) measured from 50 cm in front of the viewing glass and 1-3 m above the public floor was generally found to work well and provided adequate viewing light. With most species it was possible to stimulate daytime activity by simply reversing normal high and low light intensities of white, blue or green. Red light was used for species particularly sensitive to daylight. Five years’ experience has dictated changes and improvements. An introductory ‘day and night’ exhibit which had worked well on an experimental basis

Journal

International Zoo Yearbook – Wiley

Published: Jan 1, 1975

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