When we were first introduced to iNaturalist the first species that came to my mind was the House Sparrow. Although at the time I didn’t know the species as anything other than “the cute tiny birds outside of Jo’s,” I was excited to find out more about them using iNaturalist. Fittingly, I spotted one outside of Jo’s. I took a photo and uploaded it to iNaturalist, where two users confirmed the House Sparrow identity. After doing some research on House Sparrows, I found out that, despite their cute appearance, they are freeloaders. They take advantage of structures built by humans or other birds (sometimes even pushing other species out of their nests) and scavenge for leftovers, which explains their constant presence outside of Jo’s. 
Observation: http://www.inaturalist.org/observations/5922457
Source: https://www.allaboutbirds.org/guide/House_Sparrow/id