Grackles! Opportunists but harmless and they do like to travel in mobs.
I too love the duck photos.
I think all the birds, the ducks & the grackles around there, are used to people feeding them so humans tend to get mobbed when the birds see them.
I am a strong believer in the simple fact is that what matters in this life is how we treat others. I think that's what living is all about. Not what I've done in my life but how I've treated others. ~~ Sharon Brown