use these 7 sources it is a persuasive essay, the persuasive statement: Zoos should only have penguins if they can create a healthy environment that is stress free allowing them to show their natural behavior.
7 sources:
1. General and Comparative Endocrinology
Volume 242, 1 February 2017, Pages 49-58
General and Comparative Endocrinology
Effect of weather conditions and presence of visitors on adrenocortical activity in captive African penguins (Spheniscus demersus)
Author links open overlay panelL.OzellaaL.AnfossibF.Di NardobD.Pessania
2. Conservation Biology
Conservation Biology
Essay
Open Access
Applying science to pressing conservation needs for penguins
3. Veterinary Record
Veterinary Record
Original Research
Open Access
Avian malaria affecting penguins in zoological gardens, aquariums and wildlife parks in the UK
4. Elevated hormonal stress response and reduced reproductive output in Yellow-eyed penguins exposed to unregulated tourism
5. Effect of Covering a Visitor Viewing Area Window on the Behaviour of Zoo-Housed Little Penguins (Eudyptula minor).
Authors:
6. Little penguins, Eudyptula minor, show increased avoidance, aggression and vigilance in response to zoo visitors
7. Coping with continuous human disturbance in the wild: insights from penguin heart rate response to various stressors
Testimonials
Zoos should only have penguins if they can create a healthy environment that is stress free allowing them to show their natural behavior.