Originally a Husband and Wife team, presumable analogues to Hawkman and Hawkwoman, the Thrush and The Falconer operated as Vigilantes, complete with a secret hide out known as the Airie, which contained all of the crimefighting equipment they would need as well as the files they had accumulated.
Number of the Beast
The Thrush, along with her Side-Kick and Daughter, Falconette, are members of the Golden Age Superteam The Paladins, the worlds first Post-humans. Transported with the rest of her team-mates via daemonite teleportation technology away from the Hiroshima testing site, she was placed, along with the other Paladins into a state of suspended animation, and mentally connected to a simulation called "The Number of the Beast." - An experiment to simulate the bibical end of days with super-heroes, to gauge their reactions to such an event.
During her time in the Number of the Beast, The Thrush, along with the other Paladins were engaged in a number of violent occurrences, building on their mythos as heroes, such as defeating an Alien Invasion, or aiding the others in the defeat of Dr. Sin.
Thrush was also in the field when the members of the city "disappeared" without a trace or a lead for the heroes to follow, and while the other heroes were unbalance and worried by the turn of events, Thrush and Falconette were still on the streets, watching the super-villains who had also been left behind.
Once the intent of the "Number of the Beast" simulation had become clear to the High, he took it upon himself to save the heroes trapped inside of it, and unfortunately, the only way to do that was to kill them all. Diving into the face of the city from space, the High was able to cause an enormous explosion, killing all the inhabitants and waking them from their simulation.
As they woke from the stasis they had been placed in for the last 63 years, the heroes gathered their costumes and equipment and began to make tracks from the underground Number of the Beast Bunker in the Nevada desert. However, these actions alerted the Authority ultimatly leading to a confrontation between the two groups, with Falconette and The Thrush attacking Swift. Eventually the confrontation died down and the two teams where transported back to the Carrier.
After their transporation to the Authority's Carrier, and the subsequent battle with the Weaponised High Clones, Falconette was badly hurt, and the Thrush was last seen singing to her daughter, crying to try and calm her last moments. Her status during the Worlds End is currently unknown.