300,000?

"The passenger pigeon (Ectopistes migratorius) or wild pigeon was a species of pigeon that was once the most common bird in North America. It lived in enormous migratory flocks - sometimes containing more than two billion birds - that could stretch one mile (1.6 km) wide and 300 miles (500 km) long across the sky, sometimes taking several hours to pass."

http://en.wikipedia.org/wiki/Passenger_Pigeon

This is why we have punt guns

I only see about 187,000.

Ruin Swarm
--------------
Colossal Ooze
Hit Dice: 50d10 + 500 + 40 (815 hp)
Initiative: +16 (Dex)
Speed: Fly 90 ft. (perfect)
AC: 18 (-8 size, +16 Dex)
Attacks: ---
Damage: ---
Face/Reach: 100 ft. by 100 ft./0 ft.
Special Attacks: Engulf
Special Qualities: Swarm, ooze traits, blindsight 200 ft., fast healing 15
Saves: Fort +26, Ref +32, Will +22
Abilities: Str 42, Dex 42, Con 30, Int --, Wis 23, Cha 32
Climate/Terrain: Any
Organization: Solitary
Challenge Rating: 23
Treasure: None
Alignment: Neutral
Advancement: 50-150 HD (Colossal)

"A ruin swarm has only one tactic: swoop in and engulf any creature, in order to feed its never-ending hunger."

40% of UFO sightings are probably this. I saw one once, like a giant aerial amoeba.

I want to see a plane fly through it.

starling swarms are good for one thing: taking a massive shit on whatever they fly over

PEACE AND LOVE

They migrated here all the way from Starlingrad

Dawkins uses starlings to demonstrate emergent behavior in his most recent book. On first glance you might assume that the shape of the flock has to be coordinated somehow, but in reality it is the product of individuals obeying local rules. Protein folding happens in much the same way, except that there are a few "levels" to it.

Almost lost a star for not having a giant flying whale come through and devour them.

What th-- what the f-- are we going over there--? Are we going over there? Who the fuck is in charge here and where are we going?