Should pet birds be kept outside, all the time, even at night?

I have two parakeets and one lovebird whom I love very much. I spend a lot of time with the lovebird as the parakeets do not favor human attention. I am constantly bickering with my dad about where the birds should be kept. He always wants them outside, at all times. He complains about their feathers making a mess when they only really molt in the spring and hardly shed any feathers otherwise. Their molting cycle has come to an end and now shed almost nothing. Our whole house is a mess (most of it being his girlfriend's clutter) and all he can complain about are a few bird feathers (which I said I would gladly clean up). We live close to some mountains and our neighborhood is notorious for the coyotes who have eaten every outdoors cat. We constantly have raccoons and they have been known to snack on caged birds (at least kill them) and pond fish. It's my responsibility to make sure they are brought in every night, which I do. My dad has a problem with them coming in at night, however, and makes sure to bring it up every single day. He wants to keep them out there, covered up and never to bring them in. He thinks they're happier outside just because he hears them chirp in the morning. They chirp wherever they are, even if it's pitch black. The breeder who sold them to us stressed to us to keep them inside at night, covered up. My father has a "holier than thou" attitude, along with his girlfriend and constantly claims only what they think is right. He also refuses to take one of the parakeets to the vet, who has a weird growth on it's nose. He claims he's seen it fall off, which it has not done; everything I've looked up about it says it needs to be checked out. I'm baffled by how much they supposedly know when they've never bothered to look anything up themselves. The girlfriend has this mindset than all animals should be kept outside at all times, which has led to out dog being outside all the time, even in our cold winters. I'm tired of arguing and just want what's best for the birds. Am I wrong about the birds needing to be inside at night?