I have been kissing my birds since 1981 and happy to report that all is well. Perhaps in all this time they have built up a resistance to my bacteria?
To help set the record straight of these confusing issues, we consulted with
Dr. Brian Speer, a board certified avian veterinarian, 2000 president of the Association of Avian Veterinarians, and co-author of Birds for Dummies.
Why Mammal Saliva and Birds Don't Mix
Birds mouths are much cleaner than ours. And,
ours are much cleaner than say a cat's. When it comes to birds, the most dangerous organism in any mammal's mouth is something called Pasteurella multocida. Once introduced onto or into a bird, Pasteurella multocida can become a "very infectious organism," says Speer, crossing membranes, entering the blood stream, and taking a bird from perfect health to death in as little as one hour.
That means a bird that is attacked by a cat, even if the injuries look minor, can be in serious trouble. The bird's instinct will be to clean the wounds by licking them. Doing so, the bird ingests this dangerous organism and may be starting a chain of events that leads to serious illness and even death.
According to Speer, this same organism can be found to a lesser extent in dog and human saliva.
"Unless it's a really wet kiss," chuckles Speer, "It's not a real danger to kiss them." However, he warns that safety precautions should be taken to prevent any cats or dogs (no matter how well-behaved) from "kissing" your pet bird -- even if it does look cute. Sharing food with your bird can also be a bad idea. For example, if you bite off a piece of apple before feeding it to your bird, your saliva is on that piece of food and can be introduced into your bird's system.
"In general, the rule of thumb is that you don't want saliva and pet birds to mix," says Speer. "From an academic sense, there is some risk [to kissing your bird], but
I've never seen a sick bird from human saliva. I have seen it with dogs and cats."