He takes his cars to parades, grand openings, parties, weddings and fundraisers. If both cars are requested at an event, one of his three sons will drive the Orioles car.
Hudnet's cars are so popular that he had to start a second Facebook page after his first one got overloaded with 3,230 friends and 820 photos.
When he is paid a fee for his appearance, every dollar goes into his favorite charity: Maryland Safety Education and Identification Program or MDCHIP, a child identification program run by Maryland Freemasons.
Hudnet is a member of the Masonic Lodge 134 in Freeland and chairs the CHIP program in Maryland.
He and members of Ravens Roost 118 of Parkton recently spent two days at the Hereford Fall Festival where they gave out free identification kits to the parents of 66 children.
"Greg is very dedicated to this program. He goes all around the state to promote it," says Fred Laser, secretary of the Freeland Masonic Lodge. "It's a real service to the community."
Hudnet spent an evening at the Pioneer Pub, where the Roost meets, to train members on using the computers needed for the CHIP program.
"He had dinner before the meeting wearing his whole outfit, beads and all," says White Hall resident Chris Garcelon, president of Ravens Roost 118. "He is a great guy who's really devoted to this. I don't know how he finds time to do everything."
Hudnet's charity work earned him induction last year into the Pro Football Ultimate Fan Association. Hudnet submitted an application showing he promotes fan fellowship, encourages sportsmanship and supports charitable activities.
He joins other Ravens fans who have been inducted in the Association, including Captain Dee-Fense, Fan Man, Camo Man and Maniac.
This summer, he attended an Ultimate Fan reunion in Ohio. He and other fans visited patients at Akron Children's Hospital where Hudnet gave out purple beads to all the kids.
"There are some weeks I have four or five places to take the car. I'll spend hundreds on gas and that comes out of my own pocket," he said. "But I still love doing this. It's great to see the looks on people's faces when they see me and my car. And I'm helping a good cause to keep kids safe at the same time."
To learn more about the Baltimore Birdman, search Greg Hudnet or Baltimore Bird Man on Facebook. To contact him about an appearance, e-mail him at email@example.com.