This is a comma delimited text file of the bird observations for the Arctic Coastal Plain survey. These observations have undergone an extensive quality control process that is ongoing and corrected several errors in the source data. Point observation of birds are given in coordinate reference system EPSG:4326 and are accurate only to +/- 500m. The field "Year" gives the calendar year that the survey was flown, "Stratum" gives the transect density strata name, "NavTransect" gives the transect identifier used for navigation by the pilot (this is not necessarily the same as the design transect), and "Obs_Type" is the social group (single, pair, etc.) of the bird observation, "Num" is the number of observation of type "Obs_Type". See the data dictionary for a full description, and see the [GitHub site](https://github.com/USFWS/ACP-Mapping) for more information. **These data do not include observations where no individuals of a species occurred on a transect (i.e., Num = 0).** These null observations will need to be created using the year-specific transect identifiers in the design files if proper density estimates are required. This product was produced from the file ACPmapping.R and is simplified from the original raw data distributed at [here](https://www.sciencebase.gov/catalog/item/6477d0bed34eac007b50c071). Data quality improvements are ongoing, please report errors to the point of contact or as an issue [here](https://github.com/USFWS/ACP-Mapping/issues).
