Some names make sense.
At least this name matches the bird in question. Compared to its large size the tail is huge and can make you do a double take. That combined with the penetrating stare can really grab your attention. We saw this one in Texas a few years ago. The males are about twice the size of the rich brown females. Quiscalus mexicanus In winter, enormous flocks of both male and female Great-tailed Grackles gather in “roost trees.” These winter roosts can contain thousands of individuals, with flocks of up to half a million occurring in sugarcane fields in Texas’s Rio Grande Valley. The oldest Great-tailed Grackle (based on banding records) was 7 years 9 months. source - Cornell Lab of Ornithology.