Here’s the latest I can share based on recent aggregations:
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Common goldeneye status: Generally considered least concern globally, with stable or improving numbers in many areas due to habitat protection and nest-box programs in some regions. In parts of the UK, there have been conservation assessments noting declining trends for certain populations, prompting considerations for updated protections, though global status remains broad and positive.[1][3][5]
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Regional notes you might care about (North America vicinity): In North America, populations are often reported as stable or increasing in wintering areas when nest cavities and suitable shallow-water habitats are available; they frequently form small to large flocks and dive for aquatic prey. Sightings can spike in winter along lakes and rivers, sometimes drawing attention from birders when mixed with other goldeneye species.[5][6][1]
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Notable features for identification and behavior: Males have a greenish head with a bright yellow eye and a white body, while females are brown-headed with gray bodies; both are adept divers and forage by diving, often feeding in synchronized group strategies. They nest in tree cavities in boreal regions and migrate to coastal and inland waters in winter.[6][9]
If you’d like, I can tailor a quick local alert for Kyiv region or provide a short field guide for identifying Common goldeneye versus similar species in your area. I can also look up current regional status for Ukraine or nearby countries if you specify a location.
Citations:
- Common goldeneye general status and conservation notes.[1]
- Species overview and current status discussions including regional conservation considerations.[5]
- Identification, behavior, and nesting specifics.[9]
Sources
Common goldeneyes spend most of their time on the water. They only walk when moving broods from the nest to the water or overland to other lakes. They can fly up to 72 km per hour with 9 wingbeats per second. They fly low over the water in short-distance flights but fly at higher elevations when traveling over longer distances. Common goldeneyes are excellent swimmers and divers, they typically forage in small groups, diving synchronously to search for prey. … Common goldeneye populations seem...
animaldiversity.orgThe best way I know of to get a rare bird to fly the coop is to write about it. So by the time you see this article the two drake common goldeneyes that have been hanging out at Lake Junaluska for the past week or so will likely have vanished. But they have been consistently sighted along the shorel...
smokymountainnews.comThis is by far the more numerous of the two goldeneye species, often seen in small flocks, sometimes in large concentrations. When feeding, all the birds in one section of a flock may dive at the...
www.audubon.orgCommon goldeneye populations seem to be relatively stable despite threats to their aquatic habitats, such as acid rain, contamination, and habitat destruction. They are considered "least concern" by the IUCN because of their large range, large population size, and no documented population declines. They are protected as a migratory bird under the U.S. Migratory Bird Act. Population densities may be most affected by availability of nest cavities.
www.animaldiversity.orgThe Barrow's Goldeneye is a medium-sized diving duck. Breeding males weigh about 1,127 grams and have a contrasting black and white plumage characterized by a purplish black head with a white crescent-shaped patch at the base of the bill. Females weigh about 799 grams, have a dark chocolate brown head, a greyish brown back and whitish flanks and belly. The adult female has a bright orange bill in winter and spring
www.canada.caThe male Common Goldeneye adds a bright note to winter days with its radiant amber eye, glistening green-black head, and crisp black-and-white body and wings. The female has a chocolate brown head with the same bright eye that gives this species its name. These distinctively shaped, large-headed ducks dive for their food, eating mostly aquatic invertebrates and fish. They nest in tree cavities in the boreal forest of Canada and Alaska; look for them on large rivers, lakes, and Atlantic,...
www.allaboutbirds.orgSchedule 2 Species Assessment Proforma – Common Goldeneye Species Common Goldeneye Bucephela clangula Conservation status BOCC5 status: RED due to a severe decline (>50%) in the non-breeding population over the last 25 years and its rare breeder status (UK population
consult.defra.gov.uk