Why have some evolutionary lineages produced many more species than others? As far as one large group of birds is concerned, being in the right place at the right time is a plausible answer.
CITATION STYLE
Harvey, P. H., & Purvis, A. (2003, October 16). Opportunity versus innovation. Nature. Macmillan Magazines Ltd. https://doi.org/10.1038/425676b
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