Migratory routes and wintering locations of declining inland North American Common Terns

Annie M Bracey, Simeon Lisovski, David Moore, Ann McKellar, Elizabeth Craig, Sumner Matteson, Fred Strand, Jeffrey Costa, Cynthia Pekarik, Paul Curtis, Gerald J Niemi, Francesca J Cuthbert

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Common Terns (Sterna hirundo) breeding at inland lakes in North America have experienced significant population declines since the 1960s. Although management actions aimed at mitigating effects of habitat loss and predation have been largely effective, numbers continue to decline, which suggests that the population may be limited during the nonbreeding season. Between 2013 and 2015, we used light-level geolocators to track Common Terns nesting at 5 inland colonies--from Lake Winnipeg in Manitoba, Canada, to the eastern Great Lakes region of the United States and Canada--to identify migratory routes and stopover and wintering sites and to determine the strength of migratory connectivity among colonies. Within 46 recovered tracks, we found evidence of a longitudinal gradient in use of migration routes and stopover sites among colonies and identified major staging areas in the lower Great Lakes and at inland and coastal locations along the Atlantic coast, Florida, and the Gulf of Mexico. Low migratory connectivity across inland colonies illustrates high intermixing within wintering sites, with many birds spending the nonbreeding season in Peru (70%) and the remainder spread throughout the Gulf of Mexico, Central America, and northwestern South America. While the large spatial spread and intermixing of individuals during the nonbreeding season may buffer local effects of climate change and human disturbance, the aggregation of individuals along the coast of Peru could make them vulnerable to events or changes within this region, such as increased frequency and intensity of storms in the Pacific, that are predicted to negatively influence breeding productivity and survival of Common Terns. Identifying sources of mortality during the nonbreeding season, quantifying winter site fidelity, and reinforcing the importance of continued management of inland breeding colonies are vital priorities for effective conservation and management of this vulnerable population.

Original languageEnglish (US)
Pages (from-to)385-399
Number of pages15
JournalAuk
Volume135
Issue number3
DOIs
StatePublished - Jul 1 2018

Fingerprint

migration route
Laridae
Gulf of Mexico
Peru
stopover
breeding
lake
Canada
Sterna hirundo
connectivity
coasts
Great Lakes region
lakes
Manitoba
philopatry
Great Lakes
Central America
habitat destruction
longitudinal gradient
site fidelity

Keywords

  • ENSO
  • Sterna hirundo
  • geolocation by light
  • migratory connectivity
  • seabirds

Cite this

Migratory routes and wintering locations of declining inland North American Common Terns. / Bracey, Annie M; Lisovski, Simeon; Moore, David; McKellar, Ann; Craig, Elizabeth; Matteson, Sumner; Strand, Fred; Costa, Jeffrey; Pekarik, Cynthia; Curtis, Paul; Niemi, Gerald J; Cuthbert, Francesca J.

In: Auk, Vol. 135, No. 3, 01.07.2018, p. 385-399.

Research output: Contribution to journalArticle

Bracey, AM, Lisovski, S, Moore, D, McKellar, A, Craig, E, Matteson, S, Strand, F, Costa, J, Pekarik, C, Curtis, P, Niemi, GJ & Cuthbert, FJ 2018, 'Migratory routes and wintering locations of declining inland North American Common Terns', Auk, vol. 135, no. 3, pp. 385-399. https://doi.org/10.1642/AUK-17-210.1
Bracey AM, Lisovski S, Moore D, McKellar A, Craig E, Matteson S et al. Migratory routes and wintering locations of declining inland North American Common Terns. Auk. 2018 Jul 1;135(3):385-399. https://doi.org/10.1642/AUK-17-210.1
Bracey, Annie M ; Lisovski, Simeon ; Moore, David ; McKellar, Ann ; Craig, Elizabeth ; Matteson, Sumner ; Strand, Fred ; Costa, Jeffrey ; Pekarik, Cynthia ; Curtis, Paul ; Niemi, Gerald J ; Cuthbert, Francesca J. / Migratory routes and wintering locations of declining inland North American Common Terns. In: Auk. 2018 ; Vol. 135, No. 3. pp. 385-399.
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