Eastern Rosella or Western Rosella?
Here's how to tell the difference
Eastern Rosella
Western Rosella
Eastern Rosella
Platycercus eximius
General appearance
The eastern rosella is a medium-sized parrot known for its stunningly colorful plumage. It has a red head and white cheeks, with black and bright yellow back and shoulders. The underparts are yellowish to blue-green transitioning to a greenish-blue tail. The wings showcase a mix of bright blue and crimson shades. This parrot's bill is white, eyes brown and legs grey.
Male vs female
Males and females of this species are similar in coloration but can be differentiated by size and features. Males tend to be slightly larger, with a broader head and beak. Their plumage is also more vibrant than females', particularly the reds and blues. Additionally, the skin around the male's eye is bare and white, whereas the female’s is feathered.
Juvenile
Juvenile eastern rosellas resemble adults, but their coloring is duller. Their bill is a pale blue-grey, becoming white as they mature. The coloring on their chest is also more greenish compared to adults and they lack the stark white cheeks, which develop over time. Their eyes are a darker brown than adults.
Size
11.0 - 12.6 in/3.4 - 4.2 oz
There's more to learn about Eastern Rosella
View full detailsWestern Rosella
Platycercus icterotis
Also known as: Moyadong
General appearance
The Western Rosella is a small parrot, measuring up to 28cm in length, predominantly green and red in color with patches of blue on the cheeks and wings. Its back is emerald green with blackish edges. Its tail is a dark shade of blue and its beak is a horn color. This species is distinguished by its vivid color patterns and smaller size.
Male vs female
In terms of gender differences, males tend to have a brighter hue and their red forehead extends to the nape while females have a shorter red patch, starting from the forehead to above the eyes. Females also possess duller green, whereas males have vibrant green backs. Lastly, males have longer upper tail-coverts than females.
Juvenile
Juveniles are similar to females in coloration, but the red patch on their head is even smaller, and their green hues are significantly duller. In addition, juvenile beaks and irises are darker compared to adults. The young birds acquire the adult-like plumage after their first molt that occurs roughly a year after hatching.
Size
9.8 - 10.2 in/1.8 - 2.8 oz
There's more to learn about Western Rosella
View full detailsHow to tell the Eastern Rosella from the Western Rosella
Visual differences
The Eastern Rosella, measuring 11-12.5 inches and weighing 3.4-4.2 ounces, features a vibrant red head with white cheeks and black and yellow back. It transitions to a greenish-blue tail. In contrast, the Western Rosella, smaller at 9.8-10.2 inches and lighter at 1.8-2.8 ounces, displays a red head with blue cheeks and an emerald green back. Unlike the Eastern Rosella, the Western Rosella's beak is horn-colored, and its tail is dark blue, with males showing brighter colors than females.
Key differences and behavior
The Eastern Rosella and Western Rosella, both native to Australia, differ notably in behavior and habitat preferences. The Eastern Rosella (3.3-4.2 oz, 11-12.6 inches) is more urban-adapted, often found in parks and gardens beyond its open woodland habitat, and actively forages both in trees and on the ground for seeds, fruits, and insects. It is known for its boldness around humans. Conversely, the Western Rosella (1.8-2.8 oz, 9.8-10.2 inches) thrives in eucalyptus forests of southwestern Australia and is more inclined to ground feeding, consuming a diverse diet of seeds and berries. While both engage in mutual preening and vocalizations during courtship, the Eastern Rosella is noted for its dramatic wing and head displays, whereas the Western Rosella emphasizes colorful plumage and flight displays. Both nest in tree hollows and share similar breeding behaviors, yet the Eastern Rosella is more common in suburban settings.
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