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An investigation of pair-bonded Humboldt penguins (Spheniscus humboldti) in captivity: the differences between male-female pairs and male-male pairs
(University of Plymouth, 2018)
Same-sex sexual and pair-bonding behaviours are seen in a wide range of species. This study compared opposite-sex and same-sex pair-bond behaviours, both affiliative within pairs, and agonistic between pairs and individuals, ...