Bird feeders can be a tranquil and welcoming environment for birds—unless they’re not properly cared for. According to Colorado Parks & Wildlife, bird feeders spread diseases like salmonellosis, trichomoniasis, pigeon paramyxovirus, and avian pox. In other cases, old wet seeds can grow mold and mildew, harming the …
Source: LifeHacker – How and When to Clean Your (Probably) Disgusting Bird Feeder