This unusual behavior was observed at McInnish Park in Carrollton, Texas. These are European Starlings. My assumption is that there are three males and one female. The observation began when I noticed one of the birds hanging upside down under a parking lot light.

Mating activity indicated that the hanging bird was a female. At least one of the males on top of the lamp moved in to mate with the female while she was in the inverted position.

She then moved to the top of the light post where there were a few more exchanges before all four birds flew away simultaneously.

CountyDallas
CityCarrollton
DateFeb 27, 2012
Time of DayMorning
TemperatureCool (50-69°F/10-21°C)
WeatherOvercast
HabitatWater-Pond
Type of BehaviorMating
GenderMixed
MaturityAdult
ObserverChris Jackson