Aveomas recently went commercial, but here are some of the traditional traditions, stretching back over three years to the very early days when local colonists celebrated their Getting-Eaten-By-Birds Free Years...
Silly Hats: Worn during the Feast of Lesser Birds so the Giant Birds know you are not the wiggly worm and leave you to have a country for another year.
The Feast of Lesser Birds: A big dinner with at least one roasted chicken or turkey because a) they're tasty and seasonal, and b) if we eat them, we gain the favor of the Giant Birds by removing competition for food. It takes a lot of food to support a Giant Bird.
Gift Giving: One made by hand and one bought on sale after Christmas for each person on your list.
Mock Family Drama: Just like all family holidays, but more fun because you're making it all up as you go!
Tree Decorating: Cover your tree and everything around it with birds to show your devotion. They've been trendy the last few years and are easy to find at places like Target and Walmart. Add more every year. If you don't have a tree, feel free to build a gigantic nest to hold all your presents, or to fashion a suitably horrendous giant bird from Papier-mâché or something similar.
Use the appropriate greetings: The standard one is "Resplendent Aveomas!" The more formal ones are things like "May you have exactly the appropriate number of parasites in the year to come" and "May your children never be mistaken for the wiggly worms".
Stockings: Because we're too lazy to take them down after Christmas. Feel free to use alternatives-- cubby holes, gift boxes, shoes, little bower-bird nests, whatever will hold a selection of small gifts and candies. And don't forget the pets, especially cats and bird-dogs, who are favored by the Giant Birds for removing many Lesser Birds.