{"refrec":{"BRefID":409693,"RR":"<b>Clay, T.A.; Brooke, M.d.L.</b> (2024). Trans-equatorial migration links oceanic frontal habitats across the Pacific Ocean: Year-round movements and foraging activity of a small gadfly petrel. <i>Mar. Biol. (Berl.) 171(2)</i>: 1-15. <a href=\"https://dx.doi.org/10.1007/s00227-023-04373-3\" target=\"_blank\">https://dx.doi.org/10.1007/s00227-023-04373-3</a>","BEntID":407498,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Mar. Biol. (Berl.) 171(2)</i>: 1-15. <a href=\"https://dx.doi.org/10.1007/s00227-023-04373-3\" target=\"_blank\">https://dx.doi.org/10.1007/s00227-023-04373-3</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Clay, T.A.; Brooke, M.d.L.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Clay, T.A.; Brooke, M.d.L.","Englishabstract":"Gadfly petrels are among the widest-ranging birds and inhabit oceanic regions beyond the legislative protection of national jurisdictions (the High Seas). Detailed information on breeding phenology, at-sea distributions, and habitat requirements is crucial for understanding threats and designing conservation measures for this highly threatened group. We tracked 10 Stejneger’s petrels <i>Pterodroma longirostris</i>, endemic to Isla Alejandro Selkirk, Juan Fernández Islands in the southeast Pacific Ocean, with geolocator-immersion loggers over two years to examine year-round movements, phenology, habitat use, and activity patterns. Birds conducted round-trip trans-equatorial migrations of 54,725&nbsp;km to the northwest Pacific Ocean between Hawaii and Japan. Across the boreal summer, birds followed the <i>c.</i> 1000&nbsp;km northward movement of the North Pacific Transition Zone Chlorophyll Front, before their return migration which took a long detour south toward New Zealand before heading east at 40–50°S, presumably benefitting from Antarctic circumpolar winds. To our knowledge, a comparable triangular migration is unique among seabirds. During the pre-laying exodus, birds traveled southwest to the Sub-Antarctic Front, and unlike congeners, there was no evidence of sexual segregation. Foraging areas during incubation were similar to pre-laying, with trips lasting 13 d and taking birds up to 4810&nbsp;km southwest of the colony. Petrels spent &gt; 75% of their time flying during breeding and migration, yet flight activity was substantially lower during non-breeding, presumably due to flight feather molt. Birds spent 87% of their time at sea within the High Seas and their apparent preference for oceanic frontal regions demonstrates the importance of protecting these remote habitats.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Trans-equatorial migration links oceanic frontal habitats across the Pacific Ocean: Year-round movements and foraging activity of a small gadfly petrel","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-13 01:32:11.045372","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2024,"MonPub":null,"DateUpdate":"2025-07-07","DateCreate":"2025-07-07","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1,"DOI":"10.1007/s00227-023-04373-3"},"refs":null,"anarec":{"AnaID":409693,"PubliDate":2024,"Pagination":"1-15","XtraPublOfAnaID":null,"ISBN":null,"Volume":"171","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43352,"SerRR":"Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin.  ISSN 0025-3162; e-ISSN 1432-1793","StandardTitleSer":"Marine Biology: International Journal on Life in Oceans and Coastal Waters","ISSN":"0025-3162","AbbrevSer":"Mar. Biol. 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