With its bird-preferred design, the Perky-Pet hummingbird feeder promises hours of bird-watching pleasure. First, this feeder showcases the iconic Perky-Pet pinch-waist glass bottle with a wide mouth opening to ensure easy filling. Able to hold up to 16 oz of nectar, the clear, hardened glass bottle allows you to easily monitor nectar levels at a glance. The feeder’s design also boasts five flower-shaped feeding ports as well as bird-preferred U-shaped perches to accommodate multiple hungry birds at the same time. Each feeding port includes a built-in bee guard to protect the nectar supply. When combined with the built-in ant moat, this feeder excels at keeping out unwanted insect invaders.