Identify the version of the eBird Status and Trends Data Products that this version of the R package works with. Versions are defined by the year that all model estimates are made for. In addition, the release data and end date for access of this version of the data are provided. Note that after the given access end data you will no longer be able to download this version of the data and will be required to update the R package and transition to using a newer data version.