Rusty Blackbird

Rusty Blackbird is one of North America’s most rapidly declining species. The population has plunged an estimated 85-99 percent over the past forty years and scientists are completely puzzled as to what is the cause. They are relatively uncommon denizens of wooded swamps, breeding in the boreal forest and wintering in the eastern U.S. In winter, they travel in small flocks and are identified by their distinctive rusty feather edges and pallid yellow eyes.
Rusty Blackbirds are often gather in small flocks in winter, sometimes mix with Common Grackles, Red-winged Blackbirds and European Starlings.
The Rusty Blackbird has undergone one of the sharpest and most mystifying recent declines of any North American songbird. The North American Breeding Bird Survey estimates that populations declined by 6.2 percent every year between 1966 and 2010—a cumulative decline of 94 percent.

"Only, three sightings in two years: (7) individuals in January 2014 at Burkes Garden, (2) individuals in October 2014 at Falls Mills and (15) individuals with Red-winged Black Birds in October 2015 at Burkes Garden".