Before I started using iNaturalist, I was only aware of Grackles because they can’t really be avoided. Grackles, it seems, have no sense of personal space and go to great lengths to get some food (I can relate to the latter). However, I didn’t know much about the species so when one almost hopped on my table at lunch, I took a picture and uploaded it to iNaturalist. I added the identity “grackles” to my photo. Two other users narrowed my observation to Great-Tailed Grackle. When I read about the appearance and behavior of the Great-Tailed Grackle I knew it was the correct identity. Great-Tailed Grackles are black or brown in color, often travel in groups and are usually seen scavenging for food in urban areas. During my reading I also found out that Grackles are a “sex-biased” population with more females than males.
Observation: http://www.inaturalist.org/observations/5922487
Source: https://www.allaboutbirds.org/guide/Great-tailed_Grackle/lifehistory