Posted by Joe Montes de Oca on January 01, 1970 at 00:00:00
Toe, I checked your favorite site and the last record of a December blackburnian was in 1979 at Corkscrew Swamp: https://ebird.org/map/bkbwar?neg=true&env.minX=-88.019599609375&env.minY=20.728078498111124&env.maxX=-79.340400390625&env.maxY=34.457696167180174&zh=true&gp=true&ev=Z&mr=on&bmo=12&emo=12&yr=all&byr=1900&eyr=2018