Baltimore Oriole - eBird
Baltimore Oriole State of Tennessee, Wildlife Resources Agency
Oriole Migration: Citizen Scientists Report Sightings of Baltimore and Bullocks Orioles
Baltimore Oriole Audubon Field Guide
How to Attract Orioles This Spring
Orchard oriole - Wikipedia
The Baltimore oriole, Lifestyles
Birds' ranges may undergo huge changes
Some orioles are being dyed a brilliant red by the food they eat