Window strike victim. This is either a hermit or a Swainson's thrush, I learn towards hermit because of the bright eye ring, but it's a dull brown like a Swainson's so I'm not sure.
window collisions, downtown Newark (primarily PSE&G, Prudential Tower, Prudential Arena, Gateway 3 and 4, 3 Penn Plaza, One Riverfront, and Seton Hall Law School)