PBS expands its market for antiques

“Antiques Roadshow” (7 p.m., PBS, check local listings) has inspired many imitations. Now, after a glut of “American Pickers,” the folks behind “Roadshow” have concocted their own spinoff, “Market Warriors” (8 p.m., PBS, check local listings).

In each episode, professional dealers and buyers scour a large, regionally famous flea market. At the end of each installment, they auction off their purchased treasures. The buyer with the most expensive booty grabs the bragging rights for that week.

This harmless summer distraction is hardly an original idea. The notion of the auction at the end of the show was a big part of the long-running British series “Cash in the Attic.” But “Market” does give viewers the vicarious pleasure of visiting a new American antiques market every week. First up: Adamstown, Pa., located in that state’s fabled Amish Country.

And, to add a note of whimsy, Fred Willard (“Best in Show”) narrates “Market.” Willard also hosts ABC’s “Trust Us With Your Life” on Tuesday nights.

If I have anything to quibble over, it’s the title. Why “Market Warriors”? Why turn a bit of competitive antiquing into combat? The show’s logo even includes four little stars under the title. It’s as if somebody has become the Gen. George S. Patton of yard sales.

• The 2012 documentary “Birders: The Central Park Effect” (8 p.m., HBO) follows an intrepid group of urban birders from season to season as thousands of migratory birds and permanent aviary guests provide viewing opportunities in Central Park, an oasis of green in New York City’s concrete environment.

As one birder explains, his hobby offers the thrill of hunting without the need for bloodshed. One enthusiast is novelist Jonathan Franzen, who reluctantly agreed to join a group of birders and found his life and perception of city living utterly transformed.

It was, he said, “as if the trees were hung with ornaments.”

Tonight’s other highlights

• Provenza’s ex puts him in a dicey spot on “The Closer” (8 p.m., TNT).

• Fanny’s finances are less than organized on “Bunheads” (8 p.m., ABC Family).

• Wormholes threaten the town’s very existence on the series finale of “Eureka” (8 p.m., Syfy).

• A suspect can’t face the facts on “Perception” (9 p.m., TNT).