Search for dissertations about: "Motacilla"
Found 2 swedish dissertations containing the word Motacilla.
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1. Effects of Post-Glacial Range Expansions and Population Bottlenecks on Species Richness
Abstract : This thesis relates modern speciation theory to the effects of sudden changes in the range and size of populations. Special reference is made to the climatic oscillations during the Quaternary ice ages. READ MORE
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2. Species Limits and Systematics in Some Passerine Birds
Abstract : I use morphological, vocal, molecular, behavioural, ecological and distributional data to re-evaluate the systematics of three passerine bird groups, the Mirafraassamica complex (bush-larks), the genus Seicercus ("spectacled-warblers"; with emphasis on the the S. burkii complex) and the genus Motacilla (wagtails). READ MORE