In a new study covering thousands of lakes and ponds across the southern part of the range, the loon population shows a marked decline in productivity — on average by 40 percent over decades. Yet the state of Maine stands out against this backdrop: here the number of chicks per pair has remained relatively stable for more than 35 years, and in 2026 local observers counted about 2770 adult birds and 276 chicks in the southern part of the state alone.
Researchers from Birds Canada analyzed long-term data and noted that in the Canadian prairies and Maritime provinces the decline proved far steeper. In Maine, according to ecologist Matt Furst, there is "little evidence of declining productivity," and over recent decades the figures have held at the same level. This contrasts with the overall trend, in which construction, pollution and lead fishing sinkers continue to threaten the birds.
Climatic factors also play a role: more acidic rainwater and turbidity from storm runoff make it harder for loons to find fish. Nevertheless, in Maine adult birds are doing reasonably well, and chick production remains sustainable, although some recent observations indicate that overall productivity is still below the level needed for long-term maintenance of the population.
Maine Audubon, which conducts monitoring in the state, confirms: adult loons are in good condition, and chick numbers have shown no sharp fluctuations over the decades. This is the result of many years of conservation efforts — from restrictions on lead tackle to educational programs and control over coastal development.
Such local resilience is a reminder of how individual patches of an ecosystem can serve as a buffer against broader threats. Loons, whose call has become a symbol of northern lakes, are so far holding their ground here, offering hope that targeted measures can slow negative processes.
At the same time, experts emphasize: without continued monitoring and adaptation to changing conditions, even in Maine the situation could change. Stability is not an endpoint but a signal that conservation works when it is consistent and data-driven.
