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Article
Tim R. Birkhead, Auteur ; Jamie E. Thompson, Auteur ; John D. Biggins, Auteur ; Robert Montgomerie, AuteurA recent broad comparative study suggested that factors during egg formation – in particular ‘flight efficiency’, which explained only 4% of the interspecific variation – are the main forces of selection on the evolution of egg shape in birds. A[...]
Article
Tim R. Birkhead, Auteur ; Jamie E. Thompson, Auteur ; John D. Biggins, AuteurThe adaptive significance of avian egg shape is poorly understood, and has been studied only in those species producing pyriform (pear-shaped, or pointed) eggs: waders and guillemots (murres) Uria spp., albeit to a limited extent. In the latter,[...]
Article
Tim R. Birkhead, Auteur ; Jamie E. Thompson, Auteur ; Duncan Jackson, Auteur ; John D. Biggins, AuteurThe adaptive significance of avian egg shape in birds is poorly understood. The pyriform (pear-like) shape of the Common Guillemot's Uria aalge egg has long been considered to be an adaptation to prevent eggs rolling off the bare cliff ledges on[...]
