Oh, that's a lot but nothing like here in the northern DFW area in the fall when huge hoards (?) of grackles (really noisy black birds) show up when they are migrating and hang around for a few weeks--one of their favorite places is near shopping areas--we have gone into a restaurant and literally come out to find our brown van COMPLETELY covered in bird crap after parking under a crackle filled tree (one and only time we did that, but it was the only place to park)--wish I'd taken pictures but we were afraid it would damage the paint and immediately took the van to wash it--sometimes when we are at McD's in this area you can look out the windows of the play area and see the grassy space next to the access road all black with no green showing--while EVERY phone line, electrical line, tall signs, etc. are maxed out with birds sitting across them--hundreds and hundreds of birds. Sometimes it is so noisy you have to shout at others so they can hear you!! I always tell my daughter it is like the Alfred Hitchcock movie "The Birds" only worse! I am very careful to keep our windows up when we are at the intersections where there's boatloads of grackles--it's never happened, but I sure don't want any flying into the van! It's also fascinating to watch them arise from a field or parking lot en masse, wheeling around in the sky like a huge black cloud of bees, before they stop and settle again back in the grass or the parking lots or on the phone lines, etc. Sometimes they stare right at you silently and that's kind of creepy too! < shudders >
Here's a website where someone has videotaped a herd (?) of grackles gibbering to each other--in real life they are really much louder than that when there is a really large group of them! Again, creepy!
Grackles making a lot of noiseWe have immense, pestilent grackle swarms in Houston that would scare Alfred Hitchcock senseless. Like other denizens from Mexico, they are uninvited, loud, boisterous, thieving and crap on everything. Grackles should be the national bird of Mexico!
The most impressive flock of birds I ever saw were migrating Canadian geese that set down for the night in the rice fields near Katy, Texas. They solidly covered the ground over several acres.