I have bags and bags full of makeup that i don't even use!  
Hoarding is a behavior where people or animals accumulate food or items
Yes, and I have this behavior!  I can't seem to party with any of the makeup.  Some of it is about 5 years old!
Hoarding is a common behavior in many birds species 
Yes, but I'm not a bird. I'm a human.
Hoarding
Hoarding is a behavior where people or animals accumulate food or other items.
Animal behavior.
"Hoarding" and "caching" are common behaviors in many bird species as well as in rodents. Most animal caches are of food. However, some birds will also stingily collect other items, especially if the birds are pets. Magpies are infamous for hoarding items such as money and jewelry. (Contrary to popular belief, research suggests magpies are no more attracted to shiny things than other kinds of items.
diet consisting of several of those items or of mealworms is adequate to maintain weight. In an experiment, marsh rice rats did not show hoarding behavior, but wild rice rats have been observed carrying food to a nest. Even when they live in uplands, they mostly eat water plants and animals, although they consume some upland plants.
Behavior and ecology Reproduction and lifecycle.
Breeding occurs mostly during the summer. Some studies report that breeding ceases entirely during the winter, but winter breeding occurs as far north as Virginia,