I, Lord Leopold Borthwell, have recently encountered a series of most damnable conundrums that all seem to stem from a single problem: flight. You see, caer can merely fly over any walls that would keep a normal human out. This leads to many complications in the seemingly-simple business of keeping people where they belong. Three specific situations have all provided unique variations of this quandary.
First, my personal estate in the Suncliff district of New Kalston has had a series of lowborn interlopers. I've seen caer children snatching fruit from my garden and flying away before the guards catch them, salesmen merely flying past the gates designed to keep their sort out, and one winged tramp discovered sleeping under a tree in my yard. What's more, I've heard reports of sneak thieves dropping onto rooftops and creeping in through upper-floor windows late at night, hidden in darkness and the night-time fogs of this country. How do I keep these unwelcome visitors away? (In fact, I'd be interested in solutions that keep the riffraff out of this part of the city altogether- perhaps I could suggest them to the constabulary.)
Second, a business venture of mine (a sort of permanent fair, or "park of amusements"), has been having problems with caer flying into the park rather than paying their admission fee. This problem is somewhat more difficult to solve than that of my house, since it is a much larger area, and furthermore my caer parkgoers must be able to fly about within the park, so solutions that affect all flying people, or rely on individual recognition, are unacceptable.
Third, I maintain a much larger country estate well outside the city, and my groundskeepers have been discovering evidence of interlopers there as well. This situation regards a tract of land much too large to be actively guarded.
Some general information to help when solving this problem is as follows. First, caer fly using wings, and are not particularly subtle- a twenty-foot wingspan is difficult to miss, though this changes at night when the mist comes in. They are fast as well, so chasing them down is difficult (though not impossible).
While caer do have a detestable habit of letting themselves into places they are unwelcome, there are those of higher standing among their ranks, and I do not wish to employ any solution that would prevent all flight within, into, or out of these locations- I do occasionally have caer guests who dislike walking everywhere, and I must admit a winged messenger is a great convenience I would not readily deny myself.
I would also like to solve these problems with a minimum of effort and expense. Therefore, ridiculous numbers of guards and newfangled technological marvels such as this 'electricity' nonsense are right out.
Oh, and no ghastly nets. I won't live in a birdcage.