Birds of North Carolina:
their Distribution and Abundance
Sooty Tern - Onychoprion fuscatus
LARIDAE Members:
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General Comments The Sooty Tern is sometimes considered to be the most abundant bird in the world, it being found commonly in tropical waters around the globe. Until recently included in the large genus Sterna, this species and the closely related Bridled Tern were moved into a separate genus in 2008. This graceful-flying tern is usually found in small numbers on most warm-season pelagic trips to the Gulf Stream in North Carolina waters -- at least from Jul into Sep, and it is one of the more frequent hurricane "victims", as numbers are displaced northward or inland by such storms. Interestingly, a few pairs of Sooty Terns have nested on North Carolina islands with other terns in the past few decades, though there appear to be no state breeding records since about 1997. Sooty Terns practically never rest on the ocean or on flotsam (as does the Bridled Tern), and thus they apparently "sleep" in the air, perhaps while soaring.
Breeding Status Accidental Breeder
NC BRC List Definitive
State Status W
U.S. Status
State Rank SHB,S3N
Global Rank G5
Coastal Plain Mainly a pelagic visitor in the warmer seasons, but a sporadic breeder (at least formerly). Mostly an uncommon to fairly common offshore visitor and migrant in the warmer months, peaking in Aug and Sep; very rarely seen from shore, except when breeding, or after hurricanes/tropical storms. Large numbers have been seen along the coast after a few such storms, such as Hurricane David in 1979 and Hurricane Emily in 1993. Has bred at Morgan Island near Cape Lookout in 1978, Cape Hatteras in 1985, Shackleford Banks in 1995, and likely at other sites. There are a few Tidewater zone records, including an excellent 17 at the American Turf farm near Creswell, 3 Sep 2016. There are about eight far inland records -- 2, Mount Olive (Wayne), 17 Aug 1955 (after Hurricane Connie); 1, Goldsboro, 22 Sep 1989 (after Hurricane Hugo); 2, Lake Auman (Moore), 6-7 Sep 1996 (after Hurricane Fran); 3, Greenville, 27 Aug 1998 (after Hurricane Bonnie); 3, Goldsboro, 1 Sep 2006 (after Tropical Storm Ernesto); 2, Buckhorn Reservoir (Wilson), 1 Sep 2006 (after Ernesto); 3, Buckhorn Reservoir, 6 Sep 2008 (after Hurricane Hanna); and 2, Buckhorn Reservoir, 3 Sep 2016 (after Tropical Storm Hermine). Main occurrence period is late Apr to the end of Sep; one on 2 Nov 1979, seen offshore, is very late. Peak counts: 668, offshore zone, between 5-10 Sep 1979 (after Hurricane David); 159, offshore zone, 27 Aug 1979 (just before Hurricane David); 164, off Hatteras, 7 Aug 1999 (apparently not storm-related).
Piedmont Storm-carried visitor to the eastern portion of the province, plus one record for the southern portion. Very rare, with about 16 records for the province. Just one known record (surprisingly) for the lakes in the Triad area or for Lake Norman -- one at Lake Norman from 12-14 Sep 2017, after Hurricane Irma. All records from early Aug to late Sep, except for one record from Wake, of a specimen after a storm, on 30 Jun 1909. Peak counts: 3, Falls Lake, 6-7 Sep 1996 (after Hurricane Fran); 3, Jordan Lake, 22 Sep 1989 (after Hurricane Hugo); 3, Jordan Lake, 27 Aug 1998 (after Hurricane Bonnie); 3, University Lake in Chapel Hill, 27 Aug 2011 (after Hurricane Irene).
Mountains Accidental/casual storm-carried visitor. Both records (of different birds?) came after the passage of Hurricane Irma: singles at Hooper Lane (Henderson), 12-13 Sep 2017, and at Lake Julian (Buncombe), 12 Sep 2017 [Chat 82:37 link]. Neither record has yet been reviewed by the NC BRC.
Finding Tips Offshore, this species is normally less numerous than the Bridled Tern. The best times to look for them are from late Jul to mid-Sep. If a hurricane is headed for the mainland, it is a good idea to check reservoirs close to the path of the eye (but driving to the reservoir in the daytime and with great care, as often there are trees, limbs, or electric wires in the roads!); the Sooty Tern can often be found for a few hours or a day following the storm passage.
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Attribution LeGrand[2018-02-20], LeGrand[2018-02-02], LeGrand[2017-08-24]
NC Map
Map depicts all counties with a report (transient or resident) for the species.
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NC Breeding Season Map
Map depicts assumed breeding season abundance for the species.
NA Maps
(source NatureServe)

View NatureServe distribution maps for Onychoprion fuscatus