Identifying Baltimore Orioles:
Slightly smaller and more slender than an American Robin, Baltimore Orioles range from 6.7 to 7.5 inches in length and feature long legs, a thick neck, and long pointed bills. Adult male Baltimore Orioles have black feathers on their head and wings, bright orange tell-tale plumage on their chest and underside, and a single solid white bar on each wing. Females and immature males are a more muted yellow-orange with grayish shading on the head, and gray wings with two white bars on each wing.
Above left: A female Baltimore Oriole on a specialized jelly and orange feeder.
Above right: A male Baltimore Oriole on a specialized feeder offering nectar, jelly, and oranges.
Where Baltimore Orioles Live:
Baltimore Orioles are a migratory bird that breed in the eastern portion of the United States and South-central Canada during summer months. Keep an eye out for these birds arriving from early April to mid-May. Their season is short, with some departing as early as late July for wintering grounds in Florida, the Caribbean, and Central America.
How to Attract Baltimore Orioles to Your Feeder:
These birds are often heard more than seen as they typically forage high in trees for insects, flowers, and fruit. They tend to be more skittish than other backyard birds, but you can be successful in attracting them to feeders. One of the simplest ways to attract Baltimore Orioles to your yard is to set up an oriole feeder.
Maintaining a clean feeder is always important for the health of your birds, but is even more important when offering feeds rich in sugar as these feeds can spoil quickly, especially in the hot summer weather. It is recommended oriole feeders be cleaned every 4-5 days. To clean, take down your feeder and discard any unconsumed jelly or fruit. Flush feeder with warm water. Scrub using either a mild solution of unscented dish detergent and warm water, or sanitize using a solution of 9 parts water to 1 part bleach. Rinse thoroughly and allow to dry completely before refilling.
What Baltimore Orioles Eat:
In the spring and fall, a Baltimore Oriole's diet is composed mainly of nectar and ripe fruit. Including flowering trees and shrubs such as crabapple and mulberries in your landscaping can help to draw these birds to your yard. The most common food offering for Baltimore Oriole's are oranges, which can be sliced in half and placed in a specialized feeder, or even nailed directly to a tree (or impaled through a smaller branch). A slightly more specialized feeder can allow the offering of additional feed options, such as nectar (sugar water) and grape jelly.
While breeding and feeding their young, a significant portion of the Baltimore Oriole's diet consists of protein-rich insects. Not overall picky, these birds will consume a wide variety of beetles, crickets, caterpillars, snails, and other small invertebrates. The protein derived from these insects is pivotal in the growth and development of the young, and we strongly encourage withholding the use of broad-spectrum insecticides in your yard to ensure a food source during this crucial stage.
Baltimore Orioles build extremely unique hanging sock-like nests woven together from slender fibers constructed in the slender upper branches of a tree. Typically these nests are 3 to 4 inches deep with a smaller opening on top and a bulging bottom chamber up to 4 inches across where the eggs are laid. Females gather materials for and construct the nest within the territory defended by her mate. Males will occasionally aid in collection of nesting materials which can consist of long grass, strips of grapevine bark, horsehair, as well as artificial materials such as twine or fishing line (*please do not purposefully set out these artificial materials as they are not the safest options for the birds).
Each pair will raise one brood consisting of 3-7 eggs each season. Eggs are roughly an inch in length and 0.6-0.7 inches in width and are a pale gray with black or brown marbling. Eggs typically hatch within 14 days and the young will fledge in an additional 14 days.
Have you seen any Baltimore Orioles on your feeders recently?