Leach's Storm-Petrel,  Oceanodroma leucorhoa

Number of accepted Leach's Storm-Petrel records for Louisiana = 24 as of July 2017

Accepted Records

One (1956-07) on 5 December 1956, Gulf of Mexico: 41 statute mi. SE South Pass of the Mississippi River, 28o 30’N, 88o 42’W; MV Oregon personnel (LSUMZ 22062). Lowery (1974) credits Harvey R. Bullis as collector when he picked up the bird on the deck in a stunned condition at 2 AM. This represents the first state record.

Photo by Donna L. Dittmann

One adult female (1999-06) on 1 Jul 1999: Gulf of Mexico: 41 mi. SSW of Southwest Pass Mississippi River, 28 o 19’ 69” N, 89 o 34’ 64” W; Steven W. Cardiff (LSUMZ 169394; DLD) and Donna L. Dittmann; NAB 53(4): 397.

One adult female (2000-2) on 12 Jun 2000, Gulf of Mexico: 37 mi. SSE of South Pass of Mississippi River, 28o 31’ 42”N, 88 o 50’ 28” W; Steven W. Cardiff (LSUMZ 171807; DLD) and Donna L. Dittmann.

One adult female (2000-3) on 12 Jul 2000, Gulf of Mexico: 51 mi. S of South Pass Mississippi River, 28o 14’ 31”N, 89 o 07’ 00” W; Steven W. Cardiff (LSUMZ 171808; DLD) and Donna L. Dittmann.

One (2000-9) on 12 May 2000, Gulf of Mexico: South Pass 89B oil platform, 45 mi. SSE of Grand Isle, 28o 40’ 11.2” N, 89 o 23’ 36.7” W; Karl Bardon (ph); NAB 54(3): 291 (+ ph p. 294).

Photo by Karl Bardon

One immature (1998-59) on 8 Aug 1998, Gulf of Mexico: approximately. 32 mi. SE of mouth South Pass of Mississippi River, 28o39'54"N, 88o45'53"W during LOS-sponsored pelagic trip; Phillip A. Wallace, Dave Patton (ph), David P. Muth (ph), Joseph P. Kleiman (ph, enhanced prints of same by G. Strickland), John P. Sevenair (ph).

Three adult females (2002-46) on 29 May 2002, Gulf of Mexico: approximately 41.6 mi. ESE of mouth South Pass of Mississippi River, 28o36'44.8"N, 88o35'56.6"W; Steven W. Cardiff (LSUMZ 173402-173404) and Donna L. Dittmann (*); NAB56(3):315 reported five individuals, which includes these specimens.

One immature male (2002-79) on 17 Jul 2002, Gulf of Mexico: approximately 40 mi. S of mouth South Pass of Mississippi River, 28o24'40.9"N, 89o11'10.7"W; Steven W. Cardiff (LSUMZ 173405) and Donna L. Dittmann (*).

Two, one adult male and one immature female (2002-80), on 17 Jul 2002, Gulf of Mexico: 48 mi. S of mouth South Pass of Mississippi River, 28o17'40.4"N, 89o11'55.9"W; Steven W. Cardiff and John Conover (LSUMZ 173406-173407), Donna L. Dittmann (*).

One adult male (2002-81) on 17 Jul 2002, Gulf of Mexico: approximately 70 mi. S of mouth South Pass of Mississippi River, 27o57'57.4"N, 89o14'20.5"W; Steven W. Cardiff (LSUMZ 173408) and Donna L. Dittmann (*).

One immature male (2002-82) on 18 Jul 2002, Gulf of Mexico: approximately 41 mi. S ofmouth South Pass of Mississippi River, 28o24'03.5"N, 89o12'0.3"W; Steven W. Cardiff (LSUMZ 173409) and Donna L. Dittmann (*). LBRC record nos. 2002-79, 2002-80, 2002-81, and 2002- 82 were included in NAB56(4):445: “eight birds recorded on two day excursion.”

Two adult males (2002-83) on 28 Aug 2002, Gulf of Mexico: approximately 57 mi. SE of mouth South Pass of Mississippi River, 28o32'41.0"N, 88o21'59.8"W; Steven W. Cardiff and B. Mac Myers III (LSUMZ 173410-173411), Donna L. Dittmann (*).

Five, three immature females and two adult males (2002-84), on 28 Aug 2002, Gulf of Mexico: approximately 55 mi. SE of mouth South Pass of Mississippi River, 28o32'56.9"N, 88o23'27.4"W; Steven W. Cardiff (LSUMZ 173412-173416) and Donna L. Dittmann (*).

Three adult males (2002-85) on 28 Aug 2002, Gulf of Mexico: approximately 47 mi. SE of mouth South Pass of Mississippi River, 28o36'30.8"N, 88o30'05.5"W; Steven W. Cardiff (LSUMZ 173417-173419) and Donna L. Dittmann (*).

One female (2002-86) on 28 Aug 2002, Gulf of Mexico: approximately 57 mi. SE of mouth South Pass of Mississippi River, 28o31'37.4"N, 88o21'58.5"W; Steven W. Cardiff (LSUMZ 173420) and Donna L. Dittmann (*). NAB57(1):71 reported that the 28 Aug trip had 15 Leach's, which includes the 11 individuals covered by LBRC nos. 2002-83, 2002-84, 2002-85, and 2002- 86.

One adult male (2003-03) on 18 Jun 2003, Gulf of Mexico: approximately 30 mi. SE of mouth South Pass of Mississippi River, 28o42'27.7"N, 88o45'53.7"W; Steven W. Cardiff (LSUMZ 173628) and Donna L. Dittmann (*); NAB57(4):503.

One adult male (2003-11) on 9 Jul 2003, Gulf of Mexico: approximately 39 mi. S of mouth South Pass of Mississippi River, 28o30'16.5"N, 88o50'55.4"W; Steven W. Cardiff (LSUMZ 173630) and Donna L. Dittmann (*); NAB57(4):503.

One male (2004-17) on 20 May 2004, Gulf of Mexico: 18.7 mi. SSE of mouth South Pass of Mississippi River, 28o47'20.0"N, 88o58'03.6"W; Steven W. Cardiff (LSUMZ 177122) and Donna L. Dittmann (*); NAB58(3):384 incorrectly indicates two Leach’s seen on 5 May and none on 20 May.

One immature female (2004-18) on 6 Jun 2004, Gulf of Mexico: 48.8 mi. ENE of mouth South Pass of Mississippi River, 29o01'35.1'N, 88o20'34.1"W; Steven W. Cardiff (LSUMZ 177123) and Donna L. Dittmann (*).

One immature female (2004-19) on 6 June 2004, Gulf of Mexico: 23 1/2 mi. SE of mouth South Pass of Mississippi River, 28o47'08.5"N, 88o50'51.5"W; Steven W. Cardiff (LSUMZ 177125) and Donna L. Dittmann (*).

One immature male (2004-20) on 6 Jun 2004, Gulf of Mexico: 50.9 mi. ENE of mouth South Pass of Mississippi River, 29o03'51.2"N, 88o18'37.5"W; Steven W. Cardiff (LSUMZ 177124) and Donna L. Dittmann (*). This and the preceding two records in NAB58(4):543.

Four (2011-096) observed during a LSUMNS pelagic survey 1-2 July 2011, Gulf of Mexico: 54.7 mi. S of South Pass Mississippi River N 28.2085° W 89.06712° (ph); approximately 70 mi. SE South Pass Mississippi River N 28.2908°, W 88.30374° (two individuals, one collected, DLD 10279, immature male); approximately 65 mi. S South Pass Mississippi River N 28.30865°, W 88.39486° (one individual, photos); Donna L. Dittmann (ph) and Steven W. Cardiff (LSUMZ).

Photo by Donna L/ Dittmann


Two (2011-157) on 24 July 2011, Gulf of Mexico: ca 46 mi. SSW Southwest Pass Mississippi River; Devin Bosler (ph) and Jeffrey W. Harris (ph) . Several were reported, but Members agreed that only two individuals could be confirmed by the submitted documentation.

Photo by Devin Bosler

One (2015-073) on 21 September 2015, Gulf of Mexico: ca 34 mi. SE of Southwest Pass Mississippi River, N28.393889o, W88.876944o; J. V. Remsen (ph), David P. Muth (ph), Charles E. Lyon (ph only), and Jeff Trahan (ph only).

Photo by Jeff Trahan

Unaccepted Records

One (1995-66) on 27 May 1995, Gulf of Mexico: approximately 45 mi. SSE of mouth South Pass of Mississippi River; NASFN49(3):261. Circumstances of observation, details submitted, and observer’s inexperience with storm-petrel identification all contributed to non-acceptance.

One (1996-19) on 4 May 1996, Gulf of Mexico: approximately 25-30 mi. S of mouth Southwest Pass of Mississippi River, 28o25'N, 89o27'W; NASFN50(3):291. The description was not adequate to support identification of this species and to eliminate Band-rumped Storm-Petrel.