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Data from: Preston's universal formula for avian egg shape - MaRDI portal

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Data from: Preston's universal formula for avian egg shape

From MaRDI portal



DOI10.5281/zenodo.6760240Zenodo6760240MaRDI QIDQ6718024

Dataset published at Zenodo repository.

Author name not available (Why is that?)

Publication date: 27 June 2022



Description

The main data are 50 photographs of eggs, one from each of 50 species.  25 of these species have pyriform eggs, based on the traditional usage of this descriptive term. The photographs were taken to allow an investigation of egg shape, so they are lit from behind to provide a clear silhouete and were arranged to have the plane containing their longest axis parallel to the 'film' plane. A csv file contains basic information about each egg. A second csv file contains the results of processing these photographs (using the script GetErrors.R) to assess the error associated with various methods of summarising egg shape, including Preston's universal formula. A third csv file conatins some summary information on many more eggs obtained from a different study.






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