New York Natural Heritage Program
Common Loon
Gavia immer (Brunnich, 1764)
Common Loon (Gavia immer) Matthew D. Schlesinger
Family: Loons (Gaviidae)

State Protection: Species Of Special Concern
A native species at risk of becoming Threatened; does not qualify as Endangered or Threatened, but have been determined to require some measure of protection or attention to ensure that the species does not become threatened. NYSDEC may regulate the taking, importation, transportation, or possession of any Species of Special Concern as it deems necessary.

Federal Protection: Migratory Bird Treaty Act
The Migratory Bird Treaty Act implements various treaties and conventions between the U. S. and Canada, Japan, Mexico and the former Soviet Union for the protection of migratory birds. Under this Act, taking, killing, or possessing migratory birds, including nests or eggs, is unlawful unless specifically permitted by other regulations.

State Rarity Rank: S4
A State Rarity Rank of S4 means: Apparently secure in New York State.

Global Rarity Rank: G5
A Global Rarity Rank of G5 means: Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.

Did you know?
Loons are considered to be ancient birds because their fossil history goes back tens of millions of years to the Eocene Epoch. Nevertheless, at least 11 other families of birds were already in existence by this time (Storer 1988).

State Ranking Justification [-]
Common Loons are a species of Special Concern in the State. Their breeding distribution within New York is restricted primarily to deep productive lakes in the Adirondacks, and although they have recovered from a notable decline since the 1970s they remain vulnerable to persistent and ongoing threats on both their breeding and wintering ranges in the northeastern U.S. The large Adirondack population, increasing popualtion size, and moderate threat levels contributed to the S4 rank. The rank was calculated using the Element Rank Estimator, version 6.03.

Short-term Trends [-]

Long-term Trends [-]