Editing Procellariiformes (section)

====Migration====

The various species within the order have a variety of [[bird migration|migration]] strategies. Some species undertake regular trans-equatorial migrations, such as the [[sooty shearwater]] which annually migrates from its breeding grounds in New Zealand and Chile to the North Pacific off [[Japan]], [[Alaska]] and California, an annual round trip of {{convert|64000|km|mi|abbr=on}}, the second longest measured annual migration of any bird.<ref>{{cite journal |doi=10.1073/pnas.0603715103 |last1=Shaffer |first1=S.A. |last2=Tremblay |first2=Y. |last3=Weimerskirch |first3= H. |last4=Scott |first4=D. |last5=Thompson |first5=D.R. |last6=Sagar |first6=P.M. |last7=Moller |first7=H. |last8=Taylor |first8=G.A. |last9=Foley |first9=D.G. |last10=Block |first10=B.A. | first11=Costa |last11=D.P. |year=2006 |title=Migratory shearwaters integrate oceanic resources across the Pacific Ocean in an endless summer |journal=Proceedings of the National Academy of Sciences of the United States of America |volume=103 |issue=34 |pages=12799–12802 |pmid=16908846 |pmc=1568927  |bibcode=2006PNAS..10312799S |doi-access=free }}</ref> A number of other petrel species undertake trans-equatorial migrations, including the [[Wilson's storm petrel]] and the [[Providence petrel]], but no albatrosses cross the equator, as they rely on wind assisted flight. There are other long-distance migrants within the order; [[Swinhoe's storm petrel]]s breed in the western Pacific and migrate to the western Indian Ocean,<ref>{{cite journal |last1=Van Den |first1=Berg A.B. |last2=Smeenk |first2=C. |last3=Bosman |first3=C.A.W. |last4=Haase |first4=B.J.M. |last5=Van Der |first5=Niet A.M. |last6=Cadée |first6=G.C. |year=1990 |title=Barau's petrel ''Pterodroma baraui'', Jouanin's petrel ''Bulweria fallax'' and other seabirds in the northern Indian Ocean in June–July 1984 and 1985 |journal=Ardea |volume=79 |pages=1–14 |url=http://ardea.nou.nu/ardea_search3.php?key=nummer&keyin=79&k2=1 }}</ref> and [[Bonin petrel]]s nesting in [[Hawaii]] migrate to the coast of Japan during the non-breeding season.<ref>{{cite book |author1=Seto, N. W. H. |author2=O'Daniel, D. |year=1999 |chapter=Bonin Petrel (''Pterodroma hypoleuca'') |title=The Birds of North America, No. 385 |editor=Poole A. |editor2=Gill, F |publisher=The Birds of North America |location=Philadelphia, PA}}</ref>