The mechanics of male courtship display behaviour in the Ptiloris riflebirds (Aves: Paradisaeidae) DOI Creative Commons
Thomas MacGillavry,

Clifford Frith,

Leonida Fusani

et al.

Biological Journal of the Linnean Society, Journal Year: 2024, Volume and Issue: 143(1)

Published: Sept. 1, 2024

Sexual selection through female choice has driven the evolution of some most elaborate signalling behaviours in animals. These displays often require specialized morphological adaptations and may incorporate signals multiple sensory modalities. Visual acoustic are precisely choreographed temporally structured courtship performances, though precise mechanics such enigmatic. We find that riflebirds (genus Ptiloris)-a bird paradise clade-achieve their remarkable display postures by hyperextending wrist joint, vastly exceeding maximal extension capabilities any other known bird. Using video collected field, we then show this hypermobility is required for a sonation unique to riflebirds, yellow interior mouth displayed dynamic phase display. As cannot be produced when exposed, it represents mechanical constraint signal design. Finally, used large morphometric dataset describe patterns sexual dimorphism wing length across diverse species, evidence structurally modified wings riflebird displays. Our study highlights nuanced choreographic differences different sheds light on intricate design features fascinating taxon.

Language: Английский

The mechanics of male courtship display behaviour in the Ptiloris riflebirds (Aves: Paradisaeidae) DOI Creative Commons
Thomas MacGillavry,

Clifford Frith,

Leonida Fusani

et al.

Biological Journal of the Linnean Society, Journal Year: 2024, Volume and Issue: 143(1)

Published: Sept. 1, 2024

Sexual selection through female choice has driven the evolution of some most elaborate signalling behaviours in animals. These displays often require specialized morphological adaptations and may incorporate signals multiple sensory modalities. Visual acoustic are precisely choreographed temporally structured courtship performances, though precise mechanics such enigmatic. We find that riflebirds (genus Ptiloris)-a bird paradise clade-achieve their remarkable display postures by hyperextending wrist joint, vastly exceeding maximal extension capabilities any other known bird. Using video collected field, we then show this hypermobility is required for a sonation unique to riflebirds, yellow interior mouth displayed dynamic phase display. As cannot be produced when exposed, it represents mechanical constraint signal design. Finally, used large morphometric dataset describe patterns sexual dimorphism wing length across diverse species, evidence structurally modified wings riflebird displays. Our study highlights nuanced choreographic differences different sheds light on intricate design features fascinating taxon.

Language: Английский

Citations

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