What are some unique food resources for hummingbirds in urban parks and gardens?

Urban parks and gardens provide hummingbirds with a variety of unique food resources, including:

Nectar: Urban parks and gardens are often planted with a variety of flowers, such as crape myrtles, begonias, cherry blossoms, etc. The nectar of these flowers is rich in sugar and is the main source of energy for hummingbirds. The hummingbird's elongated beak and retractable tongue allow it to efficiently collect nectar from flowers.

Insects: Insects in urban parks and gardens are also an important food source for hummingbirds. Hummingbirds hunt insects such as flies, wasps, spiders, beetles, and ants for protein and other essential nutrients.

Sap: When nectar resources are scarce, hummingbirds also absorb the sap left over from the burrows of sap-sucking woodpeckers. Although sap is not the main food source for hummingbirds, it can provide additional energy when there is not enough nectar.

These food resources are relatively concentrated in urban parks and gardens, providing convenient foraging conditions for hummingbirds. In addition, the relative safety of urban parks and gardens allows hummingbirds to forage and roost in a relatively quiet environment.