Sugar Substitutes: Artificial sweeteners like honey, molasses, or artificial sugars can harm hummingbirds' digestive systems.
Red Dye: Avoid using red food coloring in your nectar, as it can be harmful to hummingbirds and may contain unnecessary additives.
Preservatives: Steer clear of nectar mixes containing preservatives or additives, as they can be harmful to hummingbirds' health.
Fruit Juices: While fruits are natural, fruit juices can ferment quickly and promote bacterial growth, posing risks to hummingbirds.
Flavored Waters: Flavored waters, sodas, or sports drinks may contain chemicals or additives that are harmful to hummingbirds.
Fermented Foods: Foods that are prone to fermenting, like bread or grains, should be avoided as they can lead to bacterial growth.
Spicy Foods: Hummingbirds have sensitive digestive systems, so avoid adding spicy ingredients that could irritate their stomachs.