A recurring debate in evolutionary biology is over the extent to which microevolutionary
processes operating within species can be extrapolated to explain macroevolutionary …

Rapid divergence and speciation can occur between populations with or without ecological
differences under selection for success in intraspecific social competition-competition in …

Increasing temperatures associated with climate change are predicted to cause reductions
in body size, a key determinant of animal physiology and ecology. Using a four‐decade …

Phylogeography is a discipline concerned with various relationships between gene
genealogies—phylogenetics—and geography. The word “phylogeography” was coined in …

Gloger's rule is an ecogeographical rule that links animal colouration with climatic variation.
This rule is named after CWL Gloger who was one of the first to summarise the associations …

Aim We reviewed the occurrence of Bergmann's rule in birds (ninety‐four species) and
mammals (149 species), using only studies where statistical significance of the results was …

Bergmann's rule is currently defined as a within‐species tendency for increasing body size
with increasing latitude or decreasing environmental temperature. This well‐known …

" Here is a volume that has no parallel.... A good reference book for those interested in the
details of avian anatomy."--Science Books & Films" A gold mine of facts.... Every library and …

Aim The aim of this study is to test whether Bergmann's rule, a general intraspecific tendency
towards larger body size in cooler areas and at higher latitudes, holds for birds throughout …

Birds are plagued by an impressive diversity of ectoparasites, ranging from feather-feeding
lice, to feather-degrading bacteria. Many of these ectoparasites have severe negative effects …