Orioles are vibrant, migratory birds often welcomed at feeders for their striking colors and fondness for sweet treats like jelly. Their presence in backyards is a seasonal highlight, as they journey through different regions throughout the year.
Seasonal Shifts in Jelly Consumption
Orioles typically begin to reduce their visits to jelly feeders in late summer, usually around August and September, as they prepare for their southward migration. While they eagerly consume jelly in spring for energy after their long journey north, their dietary needs shift as the season progresses.
The decline in jelly consumption is often gradual, rather than an abrupt stop. However, as August and September arrive, the number of orioles at feeders diminishes as the fall migration period begins.
Underlying Reasons for Dietary Change
The primary reason orioles stop eating jelly is a change in their dietary requirements driven by their life cycle, particularly their instinctual drive for migration. Jelly, while a good source of simple sugars for quick energy, lacks the protein necessary for the demanding journey ahead. Therefore, as late summer approaches, orioles naturally shift to a more protein-rich diet.
Insects become a more significant part of their diet during late summer and early fall, providing the essential protein needed for muscle development and feather molting for migration. Additionally, natural food sources such as ripe berries and other fruits become more abundant, offering a blend of sugars and other nutrients. This change ensures they build up sufficient fat reserves and muscle mass to sustain their long flight to warmer wintering grounds in Central and South America.
Managing Jelly Feeders for Departing Orioles
Once orioles begin to depart or have completely left your area, typically by late summer or early fall, it is appropriate to discontinue offering jelly. Jelly feeders should be cleaned thoroughly to prevent the growth of mold and bacteria, which can be harmful to birds. This involves disassembling and washing all parts with hot, soapy water to remove residues. Disinfect with a diluted bleach solution, then rinse thoroughly and air dry.
Proper storage of feeders during the off-season helps ensure their longevity and cleanliness for the following year. Store feeders in a cool, dry place to prevent damage and contamination. While orioles are typically gone by late fall, they usually return to their breeding grounds in North America in late April or early May, at which point feeders can be put out again.