Hummingbird Feeder Replacement Flower Feeding Ports & Perches gives you options for your hummer feeder. By using the feeder with the perches on, you can give your hummingbird friends a place to rest while they dine. Or, if your hummingbird feeders are frequently plagued by woodpeckers or other unwanted birds, you can use the feeder without perches. Hummingbirds are able to hover while they feed, but other birds are not.