Sunday is Father's Day, and there are a bunch of free or low-cost events geared toward celebrating the paternal.

Does Dad have a mohawk? He can get in free at Seattle's Woodland Park Zoo on Sunday, part of Warty Pigs Mohawk Day — or get a free Rudy's Barbershop mohawk or buzz haircut at the zoo between 10 a.m. and noon that day. (The zoo's Visayan warty pigs have bushy hair that looks a bit like a mohawk, as pictured here.)

Fathers of any hairstyle are admitted free to the Museum of Flight on Sunday, with attractions such as the Concorde SST, a retired Air Force One, the Personal Courage Wing of fighter planes from two world wars, and more.

Is Dad a train buff? Fathers ride free with a paying child of any age on the Snoqualmie Valley Railroad, both Saturday and Sunday. Or if he's on the salty side, take him to the free Father's Day Chantey Sing aboard the Virginia V steamship, which happens to be celebrating its 90th birthday Sunday.

For details, see "Animal events" (for the zoo) or "Father's Day Events" in the Community Datebook calendar.

Brian J. Cantwell, Seattle Times Travel staff