Seaside Sparrow parent and nestling microsatellite genotypes from Plaquemines Parish, Louisiana, 2012-04-24 to 2017-06-14

Field crews located and systematically monitored Seaside Sparrow (Ammospiza maritima) nests in Plaquemines Parish, Louisiana during field season windows of 15 March to 30 June in the years 2012 to 2017, obtaining DNA samples from parents and nestlings. Microsatellite (N = 15) genotype data is presented to quantify the degree of extra-pair mating in Seaside Sparrows.