The study investigated behaviors of Least Grebes Tachybaptus dominicus during the breeding season. Agonistic postures and interactions and courtship rituals already mentioned by other authors are described in more detail and new pair bonding displays detected, especially Parading in Z posture and the Diving ceremony, are added to our knowledge of the species. The results are discussed in relation to the prevalent phylogenetic hypothesis for the grebe family.
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aggression
behavior
courtship
display
Least Grebe