Definition
A manager whose presence is rare and usually motivated by problems
Origins
The term became popular through a joke in Ken Blanchard's 1985 book Leadership and the One Minute Manager: "Seagull managers fly in, make a lot of noise, dump on everyone, then fly out."
See Also
How People Actually Use It
A manager who flies in, makes a lot of noise, craps on everything, and then leaves.
"Fred never accomplishes anything. All he does is come in here every now and then, complain about deadlines, puts more work on us, then goes back to surfing the intraweb. He's such a seagull manager."
Source: Urban Dictionary