This from Rachel Lucas:

HOUSTON (AP) – Like a scene from the horror movie “The Birds,” large black grackles are swooping down on downtown Houston and attacking people’s heads, hair and backs.

Authorities closed off a sidewalk after the aggressive birds, which can have 2-foot wingspans, flew out of magnolia trees Monday in front of the County Administration Building.

“They were just going crazy,” said constable Wilbert Jue, who works at the building. “They were attacking everybody that walked by.”

The grackles zeroed in on a lawyer who shooed a bird away before he tripped and injured his face, Jue said. The lawyer was treated for several cuts.

It appears that the birds are protecting their offspring. On Monday a young grackle had fallen out of its nest and adult birds attacked people who got too close, Jue said.

Another bird attacked a deputy county clerk.

“I hit him with a bottle,” said Sylvia Velasquez. “The other birds came, and one attacked my blouse and on my back.”

Two women came to help her after she fell to the ground, and the birds attacked them as well. The group escaped by running into the building.

A little research on this phenomena indicates that blackbird infestation seems to be a problem all over the US, east of the Rockies. Here in California, we thankfully experience these loud, annoying birds only occasionally. But, when they move in, they seem to displace about every other bird in the area – save for the equally aggressive seagulls, and the hawks, which likely find them rather tasty.