This is the tidied dataset containing the bird densities by transect; these densities were based on observations made by MBM-AK employees during the 1994 SEAK survey. This file was produced from the original bird density dataset, “1994_SEAK_BirdDensities.csv” using R code (“1994_SEAK_tidyCode.R”). Densities are in birds per square kilometer for each transect. Finally, the densities corresponding to AMRO (American Robin) and BANS (Bank Swallow) do not appear to be calculated correctly and should be disregarded until an explanation for their reported densities can be found.