The Bluebird Rail Data

2016-03-01T14:48:45Z (GMT) by Auriel Fournier
I combed through as many issues of The Bluebird (the publication of the Audubon Society of Missouri for all records of Sora, Virginia Rail, Yellow Rail, King Rail and Black Rail. Those data are included here. 

http://mobirds.org/ASM/Bluebird.aspx

species = the four letter alpha code for each species
year = the year the observation happened
month = the month the observation happened
day = the day the observation happened
location = the location as described in The Bluebird
county = if given, the county the observation was in
number = number of individuals, if count not given, entered a 1
volume = volume of The Bluebird
issue = issue of The Bluebird