<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Diurnal birds of prey (Accipitriformes and Falconiformes) has traditionally been known as comprising a single order. Recently, this classification has been used in the non-taxonomic sense as referring to a convergent group of birds that are largely classified as predatory birds. Although these birds are similar in their morphology, the species differ in their foraging methods and prey preference. The cranial shape and the physical attributes determine the efficiency of the resource use. The aim of this study is to increase our knowledge of the relationship between skull shape, prey preference, and foraging habits. A geometric morphometric approach was used to analyse two-dimensional cranial landmarks. We used principal component (PC) analyses on measurements that may be related to prey preference and foraging habits. The PCs are resulted described the relative height of the skull and beak, the variation in the relative size, the orientation and robustness of the lacrimal bone, the variation in the relative size of the <italic>neurocranium</italic> compared to the <italic>viscerocranium</italic>, and the orientation of the palatine bone. The dietary categories significantly overlap. The skull morphology reflects more on foraging habits than diet or prey preference.</p></abstract>

Diurnal birds of prey (Accipitriformes and Falconiformes) has traditionally been known as comprising a single order. Recently, this classification has been used in the non-taxonomic sense as referring to a convergent group of birds that are largely classified as predatory birds. Although these birds are similar in their morphology, the species differ in their foraging methods and prey preference. The cranial shape and the physical attributes determine the efficiency of the resource use. The aim of this study is to increase our knowledge of the relationship between skull shape, prey preference, and foraging habits. A geometric morphometric approach was used to analyse two-dimensional cranial landmarks. We used principal component (PC) analyses on measurements that may be related to prey preference and foraging habits. The PCs are resulted described the relative height of the skull and beak, the variation in the relative size, the orientation and robustness of the lacrimal bone, the variation in the relative size of the neurocranium compared to the viscerocranium, and the orientation of the palatine bone. The dietary categories significantly overlap. The skull morphology reflects more on foraging habits than diet or prey preference.

Analysis of skull morphometric characters in diurnal raptors (Accipitriformes and Falconiformes)

Behavioural Ecology Group, Department of Systematic Zoology and Ecology

Department of Anatomy, Cell- and Developmental Biology

Ornis Hungarica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Diurnal birds of prey (Accipitriformes and Falconiformes) has traditionally been known as comprising a single order. Recently, this classification has been...

Analysis of skull morphometric characters in diurnal raptors (Accipitriformes and Falconiformes)

Online veröffentlicht: 27. Juli 2019

Seitenbereich: 117 - 131

Eingereicht: 28. März 2018

Akzeptiert: 26. Apr. 2019

DOI: https://doi.org/10.2478/orhu-2019-0008

Schlüsselwörter
cranial morphology, morphometric, anatomy, jaw, skull, shape, convergent evolution, diurnal predator, prey preference

© 2019 Tibor Pecsics et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Analysis of skull morphometric characters in diurnal raptors (Accipitriformes and Falconiformes)

Online veröffentlicht: 27. Juli 2019

Seitenbereich: 117 - 131

Eingereicht: 28. März 2018

Akzeptiert: 26. Apr. 2019

DOI: https://doi.org/10.2478/orhu-2019-0008

Schlüsselwörtercranial morphology, morphometric, anatomy, jaw, skull, shape, convergent evolution, diurnal predator, prey preference

© 2019 Tibor Pecsics et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Schlüsselwörter
cranial morphology, morphometric, anatomy, jaw, skull, shape, convergent evolution, diurnal predator, prey preference