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Full-Text Articles in Animal Sciences
Vocal Learning In Grey Parrots: A Brief Review Of Perception, Production, And Cross-Species Comparisons, Irene M. Pepperberg
Vocal Learning In Grey Parrots: A Brief Review Of Perception, Production, And Cross-Species Comparisons, Irene M. Pepperberg
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This chapter briefly reviews what is known—and what remains to be understood—about Grey parrot vocal learning. I review Greys’ physical capacities—issues of auditory perception and production—then discuss how these capacities are used in vocal learning and can be recruited for referential communication with humans. I discuss cross-species comparisons where applicable and conclude with a description of recent research that integrates issues of reference, production and perception.
Capuchins (Cebus Apella) Can Solve A Means-End Problem, Anna M. Yocom, Sarah T. Boysen
Capuchins (Cebus Apella) Can Solve A Means-End Problem, Anna M. Yocom, Sarah T. Boysen
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Three capuchin monkeys (Cebus apella) were tested on a 2-choice discrimination task designed to examine their knowledge of support, modeled after Hauser, Kralik, and Botto-Mahan’s (1999) experiments with tamarins. This task involved a choice between 2 pieces of cloth, including 1 with a food reward placed on its surface, and a second cloth with the food reward next to its surface. After reliably solving the basic problem, the capuchins were tested with various alternations of the original food reward and cloth. The capuchins were able to solve the initial task quickly, and generalize their knowledge to additional functional and nonfunctional …
Octopuses (Enteroctopus Dofleini) Recognize Individual Humans, Roland C. Anderson, Jennifer A. Mather, Mathieu Q. Monette, Stephanie R.M. Zimsen
Octopuses (Enteroctopus Dofleini) Recognize Individual Humans, Roland C. Anderson, Jennifer A. Mather, Mathieu Q. Monette, Stephanie R.M. Zimsen
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This study exposed 8 Enteroctopus dofleini separately to 2 unfamiliar individual humans over a 2-week period under differing circumstances. One person consistently fed the octopuses and the other touched them with a bristly stick. Each human recorded octopus body patterns, behaviors, and respiration rates directly after each treatment. At the end of 2 weeks, a body pattern (a dark Eyebar) and 2 behaviors (reaching arms toward or away from the tester and funnel direction) were significantly different in response to the 2 humans. The respiration rate of the 4 larger octopuses changed significantly in response to the 2 treatments; …
Squid Dances: An Ethogram Of Postures And Actions Of Sepioteuthis Sepioidea Squid With A Muscular Hydrostatic System, Jennifer A. Mather, Ulrike Griebel, Ruth A. Byrne
Squid Dances: An Ethogram Of Postures And Actions Of Sepioteuthis Sepioidea Squid With A Muscular Hydrostatic System, Jennifer A. Mather, Ulrike Griebel, Ruth A. Byrne
Sentience Collection
A taxonomy of the movement possibilities for any species, within the constraints of its neural and skeletal systems, should be one of the foundations of the study of its behaviour. Caribbean reef squid, Sepioteuthis sepioidea, appear to have many degrees of freedom in their movement as they live in a three-dimensional habitat and have no fixed skeleton but rather a muscular hydrostatic one. Within this apparent lack of constraints, there are regularities and patterns of common occurrences that allow this article to describe an ethogram of the movements, postures and positions of squid. Squid have a combination of bent, …