First, you have to make sure the dragons know they’re welcome.
Next, send up a signal. If the dragons fly close by, you might be able to use something small:
If that doesn’t work, go bigger. Dragons like s’mores, so if you make some in one of these, they will definitely see you on their nightly fly-over.
With luck, you’ll attract a mated pair.
Then next spring, when they’ve come to trust you, perhaps they’ll let you guard their eggs!