Ivory Gull or Dovekie?
Here's how to tell the difference
Ivory Gull
Dovekie
Ivory Gull
Pagophila eburnea
Ivory Gull Recognition Guide
General appearance: The Ivory Gull is a striking bird with pristine white plumage that distinguishes it from other gulls. Its body is entirely white, except for its black eyes and small, black bill with a bright yellow tip. The legs are short and bluish-gray, often appearing almost black. In flight, the bird showcases a streamlined body with rounded wings, subtly edged with a gray tone that may be visible under certain lighting conditions. Male vs female: There is little noticeable difference between male and female Ivory Gulls, as both sexes appear similar in coloration and size. Both males and females maintain the same pristine white plumage and exhibit identical physical characteristics. Any subtle distinctions are often difficult to observe in the field without close observation. Juvenile: Juvenile Ivory Gulls differ quite distinctly from adults, as they are not pure white but exhibit dusky spotting and mottling over their body. Their plumage can appear dirty or smudged in places, with more dark areas on the head and wings. Over time, as they mature, the juvenile gulls gradually lose this mottling, transitioning to the immaculate white color of their adult counterpart. The transition to complete white typically takes about two years.
Size
18.1 - 16.9 in/16.2 - 26.5 oz
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View full detailsDovekie
Alle alle
Also known as: Little Auk
Dovekie Bird Recognition Guide
1. General appearance - The Dovekie is a small sea bird with a compact body and short wings. Its coloration varies with the seasons. During the breeding season, its plumage is characterized by a striking contrast of black on the upper parts, including the back and wings, and bright white underparts. The face and neck remain black in summer. Outside the breeding season, their plumage becomes predominantly white, with some gray or black markings on the upper side. 2. Male vs female - Dovekies exhibit little to no sexual dimorphism, meaning males and females are almost identical in appearance. Both sexes have similar plumage patterns and coloration during the respective seasons, making it challenging to differentiate them solely based on visual cues. 3. Juvenile - Juvenile Dovekies differ from adults primarily in their plumage. They are generally more muted, with less distinct black and white contrasts. Juveniles often present mottled grayish or brownish tones on their upper parts, which gradually transition into the classic adult coloration as they mature. Unlike adults, their bills may appear more slender, and their overall demeanor might be slightly less robust until full maturity is achieved. This lack of strong color contrast aids in camouflaging against predators.
Size
7.5 - 10.2 in/4.8 - 7.6 oz
There's more to learn about Dovekie
View full detailsHow to tell the Ivory Gull from the Dovekie
Visual differences
The Ivory Gull is larger, measuring 18-17 inches long and weighing 1-1.6 pounds, with pure white plumage, and a slightly curved beak. In contrast, the Dovekie is much smaller, at 7.5-10 inches in length and 0.3-0.5 pounds, with a black and white "penguin-like" plumage and a short, stout beak. These visual differences in size, plumage color, and beak shape make the two Arctic birds distinguishable.
Key differences and behavior
The Ivory Gull and Dovekie both thrive in Arctic marine environments, but exhibit notably different behaviors. Ivory Gulls are solitary gourmets, following polar bears to scavenge seal carcasses. Their opportunistic diet includes fish and invertebrates, highlighting their adaptability in harsh climates. They prefer isolated nest sites on Arctic cliffs. Conversely, Dovekies are social swimmers, diving for small fish and zooplankton. They form large flocks for synchronized movements. Dovekies nest in rocky crevices on cliffs, showing strong site fidelity. While both engage in monogamous courtship, Ivory Gulls use aerial displays, whereas Dovekies perform synchronized dives.
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