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Organizing the sampling

Although it’s been a little over a year since our last post, we’ve been busy. As I noted in the introductory post, the goal of OpenWings is to generate a time-calibrated phylogeny for all bird species using vouchered museum specimens. The important word here being “vouchered”. A voucher or voucher specimen is a preserved organism that represents the animal used in a study (or studies). The voucher can be a source of phenotypic or genetic data (or both).  Because vouchers are housed in museums, they provide a resilient, tangible reference that can be used to confirm (or define) the identity of a species, subspecies, or population. Vouchered specimens are important because they allow researchers to deal with problems like misidentification, incorrect or changing taxonomy, and differences in species concepts.  Vouchered specimens can also provide a temporal record of how species, subspecies, and populations have changed over time —  provided sufficient specimens have been collected over the intervals of interest. Vouchered specimens can also be type specimens. One of the hurdles for a project like OpenWings is identifying vouchered specimens from which we can collect genetic data and doing that across a number of ornithological collections throughout the United States and the rest of […]

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