New York Natural Heritage Program
Henslow's Sparrow
Ammodramus henslowii (Audubon, 1829)
Henslow's Sparrow Patricia L. Nelson
Family: Buntings, American Sparrows and Relatives (Emberizidae)

State Protection: Threatened
A native species likely to become an endangered species within the foreseeable future in New York (includes any species listed as federally Threatened by the United States). It is illegal to take, import, transport, possess, or sell an animal listed as Threatened, or its parts, without a permit from NYSDEC. 1) Any native species likely to become an endangered species within the foreseeable future in New York. 2) Any species listed as threatened by the U.S. Department of the Interior.

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: S3B
A State Rarity Rank of S3B means: Typically 21 to 100 breeding occurrences or limited breeding acreage in New York State.

Global Rarity Rank: G4
A Global Rarity Rank of G4 means: Apparently secure globally, though it may be quite rare in parts of its range, especially at the periphery.

Did you know?
John James Audubon named the Henslow's Sparrow in honor of his good friend John Stevens Henslow, a professor of botany at Cambridge and teacher of Charles Darwin.

State Ranking Justification [-]
There is evidence of a significant decline across the species' range and there has been a loss of grassland habitats in New York State in recent years. Breeding Bird Survey data show a possible decline of 18.7% per year between 1980 and 2006 in New York (Sauer et al. 2007). When comparing data from the first and second breeding bird atlases, an 80% decrease is noted with Henslow's sparrows reported in 348 blocks (Andrle and Carroll 1988) and 70 blocks (McGowan and Corwin 2008), respectively. McGowan and Corwin (2008) describe this decline as "the largest proportional decline in any formerly common species in the Atlas."

Short-term Trends [-]

Long-term Trends [-]