If you have pets, especially cats, they might be scaring away the hummingbirds from your yard. Hummingbirds are very sensitive and alert to any potential threats. They can easily perceive barking ...
Just like you would with a water bowl for your pets, sugar water mixtures need to be replaced, too. Hummingbirds flock to a feeder. If you are setting up a feeder, consider placing it away ...