Ostrich is the current Burger of the Month at this Capitol Hill hangout, and the Bahn Mi burger ($11) is good anytime.

Seward Park’s ground round go-to ups the game with the Angry Bird burger, a grilled chicken breast with pepper jack cheese, covered with Bent Hot sauce. Don’t pig out. Hotheads like the Human Torch with a broiled beef patty, habanero, jalapeno, red, green and yellow peppers.

They slide an over-easy duck egg onto a Painted Hills burger and add melted onions, white cheddar cheese and roasted garlic aioli, on a Kaiser roll for $16.50. There are also oblong plates of little lamb burgers with citrus aioli for $12.

New at this oldtimer is the Bour B-Q burger: a prime beef patty with smoked cheddar, bourbon BBQ sauce, onion rings and coleslaw for $11.

Mad fab chefs Rachel Yang and Seif Chirchi have a luscious Kalbi burger and add vivid horseradish (the other hot sauce) and giardiniera for 16 buckaroos, plus you get to eat dinner at their very cool spot.

With three new burgers each week (they're called "experiments"), the lab stays sharp. Look for King Felix’s Heater right now, with jalapenos, bleu cheese and bacon. Also playing are the Dork & Beans (dork = pork and duck) and the Herb Bird #37 made with churken (chicken and turkey), Swiss, onions,roasted garlic and basil pesto mayos.

Former Bisato chef/owner Scott Carsberg has created a big new cheeseburger for the menu: a half pound mix of beef, pork and veal, with a duck egg, truffle mayonnaise, crushed potato salad, for $16.50, or $14 without the egg. But it’s better with the egg.

The juicy Sonics burger arrives before the team does, and it’s a doozy with caramelized onions, hot sauce, Rain City sauce, cheddar and Swiss cheese. $6.99 and so worth it.

The newest burger (it’s actually been around for a while but it’s good) at this sausage haus is The Sark – UW football coach Steve Sarkisian’s favorite. The top sirloin patty has melted Swiss cheese, sweet pineapple, bacon, caramelized onions, and SARK-iaki glaze.

Water buffalo – they’re not just for Italian mozzarella anymore. The $15 w.b. burger is an artfully ground beast (those critters are enormous) with taleggio cheese, some tomato, house pickles, lettuces and aioli.

The Elk Burger (the oversized deer, not your inebriated BFOE-affiliated aunt) is a menu regular but fixins change all the time. Right now the game patty comes with asparagus slaw, Havarti cheese, pesto aioli, greens and a tomato slice for $13. Vegheads like the Crispy Emmer Veggie Burger with portobello mushroom, romaine, tomato, red onions and some special sauce for $8.