Survey-What do you feed the birds that are outside your trailer?

Because I'm thinking pretzels and beer ain't doing it for the birds around here. I mean, they like the pretzels, but they stay away from the beer. Well that makes no sense, cuz everyone knows birds like to get drunk. Cedar waxwings deliberately eat fermented berries in the fall around here and crash into my pickup when it's parked in the lawn. So what other alcohol would birds drink?