A morphometric approach quantified that the Ground Tit has a comparatively longer and more decurved upper beaks than other parids. We estimated that the ancestor of the Ground Tit likely had a short straight upper beak similar to most current recognized parid species using an ancestral state recon...
[1,2]. A bird’s body size and shape are related to its migratory habits, flight mode, habitat use, and foraging behaviour, as well as the effects of sexual selection [3–5]. Bird beaks are considered relevant to foraging modes, food types, parental care and song structure [6–8]. ...
Our results shed new light on the evolution of beak morphology in a non-model species and possibly in other extensive bird species as well. Results A derived long decurved beak in the Ground Tit Length, width and depth of upper beaks from 349 skin specimens were measured for linear analysis...
Deep beaks are presumed to enhance a bird's ability to crack hard seeds, and narrow beaks have been proposed to enhance a bird's efficiency in manipulating seeds.2In the present study, we make the first direct measurements of bite force in Darwin's finches. We used 147 G. fortis from ...
Aim: Wallacea is a global biodiversity hotspot and Sulawesi is the largest island in this region, notable for a high proportion of endemic species. The Wakatobi archipelago, off the southeastern peninsular arm of Sulawesi, is home to several endemic bird species. Although islands are known to in...
Variationsoccurring in the shapes were assessed, and combinations of the condylar shapes present in the populationwere established.Result: Of 1600 pairs of condylar heads evaluated, 78% were oval in shape, followed by diamond (12%),crooked finger (6%) and least being bird b...
Results: This study showed that the shape of the condylar head in Open bite cases consisted of 76% oval shape, 16% diamond shape and 8% bird beak shape. Shape of the condylar head in Deep bite cases consisted of 64% oval shape, 20% diamond shape, 12% bi...
Erratum: MOLECULAR PHYLOGENETICS OF THE RAMPHASTOS TOUCANS: IMPLICATIONS FOR THE EVOLUTION OF MORPHOLOGY, VOCALIZATIONS, AND COLORATION potentially effective method to sample bird communities by acting, in effect, as "point counts", recording vocalizations at a given point for a set time... JD W...
Multi-layered bird beaks: a finite-element approach towards the role of keratin in stress dissipation. J R Soc Interface. 2012;9(73):1787–96. doi:10.1098/rsif.2011.0910. Article PubMed PubMed Central Google Scholar Starck JM. Comparative anatomy of the external middle ear of palaeognat...