When do they start showing up?
Do you guys have housing built for the Martin's? If so do you maybe have plans on building that you'd share? I would love to build some like I've seen that uses a boat winch to lower and raise them. I've always wanted Martin's around the house I've read that they eat an enormous amount of mosquitoes.
Guybo , google S&K Mfg. they have gourds and the poles with the winch you need. Think the gourds are like $13 the ones use. Not to late to put them up but you need to act fast. I now have 10 that has showed up at my place. Mine been coming for several years now....have 2 poles with 12 gourds on each pole. Last year I had over 40 martins and getting more each year. Will probably put up another pole next year. I have a book on them....they winter each year in Brazil and this has been the earliest this year I have seen them. Love to hear them while sitting on my front porch each morning having my coffee and the late afternoon when coming in to roost for the night. I can go to my mailbox to get the mail, and they will swoop down inches off my head letting me know you getting too close. Interesting birds for sure.