Flamingo party
Well, I think it's a cute idea. Flamingos live in Florida's tropical climate, and so a tropical party at the end of a cold winter would be a refreshing way to get people thinking of spring and summer. I would go with tropical themed foods and drinks...Bay breezes or Sea breezes (they are rose colored drinks that would look nice in pitchers with lemon & orange slices floating). Maybe crabmeat quesadillas cut into appetizer-sized portions, an exotic fruit platter with mango, papaya, pineapple, and strawberries...key lime pie for a dessert. I've seen recipes for key lime cakes too, if you want to have birthday cake.
BTW, when my husband turned 40, some of our friends had him "flocked." This is where a church youth group, as a fundraiser, would go to a person's house and put 40 pink flamingos (or whatever the appropriate number was) in the yard, with a happy birthday sign. It was a funny surprise to drive up and see all those flamingos in the yard. After about 2 days, the youth group came and retrieved them. All the neighbors had a laugh over it, and we did too.
I just noticed that there are some ads along the right side of this screen for party planning and for plastic flamingoes. Maybe you could check some of those links...
Have fun!