Snow Goose Migration Draws Crowds and Raises Conservation Concerns

Kleinfeltersville, PA – Each spring, thousands of snow geese descend upon the Middle Creek Wildlife Management Area in Pennsylvania, creating a spectacular display that attracts birdwatchers from across the region. Though, the increasing population of these migratory birds is also raising concerns among scientists about the health of their Arctic breeding grounds.

A “Raucous Bird Tornado”

The arrival of the snow geese at Middle Creek is a dramatic event. Birdwatchers gather before dawn to witness the synchronized takeoff of thousands of birds from the reservoir, a sight described by Pennsylvania Game Commission environmental education specialist Payton Miller as a “raucous bird tornado.”¹ The birds circle briefly before heading to nearby farm fields to feed on unharvested grains as they prepare for their journey north.

Migration Route and Numbers

The snow geese stop at Middle Creek as a way station during their annual spring migration to breeding grounds in the Canadian Arctic and western Greenland.³ They spend the winter months along the Atlantic coast, from New Jersey south to the Carolinas, often overwintering on the Delmarva Peninsula. The 6,300-acre Middle Creek property has seen increasing numbers of snow geese since the late 1990s, attracting approximately 150,000 visitors annually, including around 1,000 hunters.³

In 2026, peak snow goose numbers at Middle Creek reached approximately 100,000, comparable to recent years, though below the record of 200,000 observed on February 21, 2018.¹

Population Growth and Environmental Impact

While snow geese are thriving, their growing numbers are causing ecological problems. A 2017 study indicated the greater snow goose population grew from around 3,000 in the early 20th century to approximately 700,000 by the 1990s. Current estimates suggest a population of around one million greater snow geese, alongside potentially ten million lesser snow geese.¹ This overabundance has led to overgrazing and habitat damage in the Arctic, prompting concerns from wildlife officials.

David M. Bird, a wildlife biology professor at McGill University, has described the situation as “probably one of the biggest conservation problems facing wildlife biologists in North America today.”¹ Snow geese feed by uprooting plants, which damages habitats for themselves and other wildlife.

Other Waterfowl and Health Concerns

Middle Creek also attracts other waterfowl, including tundra swans and Canada geese. The number of tundra swans visiting the area has increased from a dozen in the mid-1970s to over 5,000 in recent years.¹ Birdwatchers have identified more than 280 bird species at the site, including bald eagles, northern harriers, ospreys and owls.

The Pennsylvania Game Commission has reported the continued presence of avian influenza viruses in the state’s wild bird population since 2022.¹ Approximately 2,000 wild bird carcasses, mostly snow geese, were removed from a quarry near Bethlehem in December and January.

The management of snow goose populations presents a complex challenge, balancing the interests of nature lovers, farmers, hunters, and animal rights advocates.