The Impacts of a Commercial Bubble Curtain on Zoo-Housed African Penguin (Spheniscus demersus) Swimming Behavior
Swimming is an important behavior for all penguin species. However, zoo-housed penguins typically do not swim as often as their wild counterparts, which may have consequences for their health and welfare. In an effort to increase the swimming time of the African penguin (Spheniscus demersus) population at Lincoln Park Zoo in Chicago, IL, USA (21 […]
Nationwide Survey about the Occurrence of Aspergillosis in Captive Penguins in Zoos and Aquariums in Japan
We surveyed the facilities that were members of the Japan Association of Zoos and Aquariums to clarify the incidence of aspergillosis, which is a major cause of death in captive penguins, and to discern effective preventive measures. Responses were obtained for 2910 penguins in 64 facilities; 73 penguins (2.5%) in 35 facilities had died from […]
The Effects of Live Feeding on Swimming Activity and Exhibit Use in Zoo Humboldt Penguins (Spheniscus humboldti)
Penguins are considered among the most popular animals for zoo and aquarium visitors to observe. Swimming is considered a desirable activity, both for the visitor experience and the welfare of the penguins. However, little is known about the amount of time exhibited penguins spend swimming, or how such swimming is related to regular feeding events. […]
Penguin (Spheniscidae) Care Manual
Energetics of molt in penguins
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The effect of flipper banding on the breeding success of African Penguins Spheniscus demersus at Boulders Beach, South Africa
Concerns have been expressed over the impact of flipper banding on the survival and reproductive performance of penguins. This study compared the breeding success of banded and unbanded African Penguins Spheniscus demersus at Boulders Beach, South Africa, in 2006. It was based on 100 nests; 50 had at least one banded adult and 50 had […]
A note on swimming group size in captive African penguins (Spheniscus demersus) in relation to weather conditions
The swimming group size of captive African penguins (Spheniscus demersus) was studied in relation to weather conditions at Ueno Zoo. The occurrence of swimming behaviour did not vary between fair and cloudy conditions. However, the birds synchronized the timing of swimming with each other under cloudy conditions, and swimming group size increased under cloudy conditions. […]
Hormonal correlates of parental behavior in yellow-eyed penguins (Megadyptes antipodes)
Penguins show varying degrees of brood reduction behavior, from obligate brood reducers to brood maximizers, and we hypothesize that this is associated with differences in prolactin secretion. To address this hypothesis, we determined the breeding season prolactin profile of the yelloweyed penguin (Megadyptes antipodes) for comparison with those of other penguin species found in the […]
Effects of artificial social stimuli on the reproductive schedule and hormone levels of yellow-eyed penguins (Megadyptes antipodes)
The effects of social stimuli on avian reproductive behaviors such as breeding schedules and courtship behaviors are well known due to numerous field studies. However, studies that have simultaneously examined the effects of social stimuli on reproductive behavior and the mediating endocrine mechanisms have been largely restricted to captive populations, which may not be representative […]
Semen collection, characterization, and cryopreservation in a Magellanic penguin (Spheniscus magellanicus)
Abstract 10.1002/(SICI)1098-2361(1999)18:33.3.CO;2-R A cooperative method was developed for collecting semen from a Magellanic penguin. Ejaculate parameters and semen production during a breeding season were characterized. Experiments were performed to study the effect on penguin spermatozoa of two temperatures (4°C and 21°C) for short-term storage, and two cryoprotectants (dimethylsulfoxide [DMSO] and ethylene glycol [EG]) for long-term […]