Notes:
no sexual dimorphism; a carrion feeder that finds its "prey" by sight more so than by smell; soars on rising thermals during the heat of the day; featherless head serves a hygenic function because any feathers otherwise would be soiled by rotting carcasses upon which that the bird feeds.
pair, with on member sunbathing (Florida, USA; 2007-12-21)
in flight shows white "windows" near tip of wing (Florida, USA; 2007-12-21)
featherless black head (Florida, USA; 2007-12-21)
posing for a head portrait (Florida, USA; 2008-01-08)
posing for a head portrait (Panama; 2008-06-25)
note the short rounded tail and labored flight (Florida; 2012-12-21)
a kettle of birds soaring in a thermal updraft (Florida; 2012-12-21)