Database for the manuscript "Songbirds adjust oxygen carrying capacity through modulation of the number rather than the size of erythrocytes"

This database is used for the manuscript "Songbirds adjust oxygen carrying capacity through modulation of the number rather than the size of erythrocytes". The database includes hematological parameters of 697 individuals from three species. The sheet "Description of columns" describes all the columns in the database. For more information on the methodology, please see the Main Text or the Supplementary Materials.