ACCIPITRIDAE, Vigors, 1824

Jansen Introduction, Justin J. F. J., 2018, Specimen labelling errors: birds collected on the Falkland Islands prior to 1861, now in Naturalis Biodiversity Center, Leiden, Netherlands, Bonn zoological Bulletin 67 (2), pp. 145-169 : 162-165

ACCIPITRIDAE

Cinereous Harrier Circus cinereus Vieillot,

1816 [RMNH. AVES.191467]. Loc: Falklands

(ca. 51° 41′ 0″ S, 59° 10′ 0″ W). Date: in either 1858 or

1859. Col: C.C. Abbott. Age/sex: adult ♂. Acq: via Gus-

tav Adolph Frank Sr. Status: extant, accessed 18 Decem-

ber 2012. Tax: mounted. Pub: Abbott 1860, 1861; Gould

1859; Schlegel 1862d; Sclater 1860, 1861, 1862.

Pedestal label: [one hand] Circus cinereus / m. Cat No 1 / par le Capitaine / Abbot 1860 / Malouines.

Pedestal underside: [one hand] 21 Circus cinereus / ♂ / Catal. No 1 / eye golden yellow / feet bright yellow / beak green, tip black / reis van / Capit. Abbot / (frank 1860) / falkland-eil.

Schlegel 1862d (Tome II, 13: 5–6): Circus cinereus, Cat 1, ♂ au plumage parfait, ile orientale des malouines, recueilli par le Captaine Abbot, abtenu en 1860.

Remark: The collection site on the label, underside and in Schlegel 1862d differ. The name Abbott was transcribed incorrectly at label, underside and in Schlegel. Only Schlegel 1862d identifies the specimen as adult ♂. The bird was ac- quired through the Amsterdam-based dealer Gustav Adolph Frank and arrived on 30 April 1860 (see Kelp Goose RMNH. AVES.230433 as for C.C. Abbott). Only Schlegel’s handwriting appears under the base of the pedestal.

Cinereous Harrier Circus cinereus Vieillot, 1816

[RMNH. AVES.191468]. Loc: East Falkland (ca.

51° 41′ 40″ S, 57° 51′ 10″ W). Date: in either 1858 or

1859. Col: C.C. Abbott. Age/sex: adult ♀. Acq: via John

Gould and Gustav Adolph Frank Sr. Status: extant, ac-

cessed 18 December 2012. Tax: mounted. Pub: Abbott

1860, 1861; Gould 1859; Schlegel 1862d; Sclater 1860,

1861, 1862.

Pedestal label: [one hand] Circus cinereus / f. Cat No 2 / pr Mr. Abbot / 1860 / Malouines.

Pedestal underside: [one hand] 11 Circus cinereus / No 2 / ♀ in kleur = ♂ (Abbot) / reis van / Abbot / Frank 1860 / Oost Falkland.

Schlegel 1862d (Tome II, 13: 5–6): Circus cinereus, Cat 2, Femelle au plumage parfait, meme origine; (la femelle adulte parfaitement semblable par ses teintes au vieux male: note du Capitaine Abbot).

Remark: The collection site on the label, underside and in Schlegel 1862d differ. The name Abbott was transcribed incorrectly at label, underside and in Schlegel. Both the underside and Schlegel 1862d identify the specimen as female, but only the latter identifies it as an adult. The bird was acquired through the Amsterdam-based dealer Gustav Adolph Frank (see Kelp Goose RMNH. AVES.230433 as for C.C. Abbott). Only Schlegel’s handwriting appears under the base of the pedestal.

Cinereous Harrier Circus cinereus Vieil-

lot, 1816 [RMNH. AVES.191469]. Loc: Falkland

(ca. 51° 41′ 0″ S, 59° 10′ 0″ W). Date: February – March

1820. Col: L’Uranie Joseph Paul Gaimard / Jean René

Constant Quoy. Age/sex: adult ♂. Acq: via exchanged

with Paris Museum. Status: extant, accessed 18 De-

cember 2012. Tax: mounted. Pub: Freycinet et al. 1824;

Schlegel 1862d.

Pedestal label: [one hand] Circus cinereus / m. Cat No 3 / voy. Quoy & Gaimard, / du Musee de Paris / Malouines.

Pedestal underside: [one hand] 3 / Circus cinereus / Falco histrionius ♂ / 7 / Malouines.

Schlegel 1862d (Tome II, 13: 5–6): Circus cinereus, Cat 3, ♂ adulte Malouines, voyage de Quoy et Gaimard, du Musee de Paris .

Remark: The underside, and Schlegel 1862d all identify the specimen as male, but only the latter identifies it as an adult. Only one name source is mentioned, Quoy & Gaimard on the label and Schlegel 1862d. Only Schlegel’s handwriting appears under the base of the pedestal.

Cinereous Harrier Circus cinereus Vieillot, 1816 [RMNH. AVES.191473]. Loc: Falkland (ca. 51° 41′ 0″ S, 59° 10′ 0″ W). Date: March 1833 or March 1834. Col: C. Darwin. Age /sex: young ♂. Acq: via Gustav Adolph

Frank Sr. Status: extant, accessed 11 February 2013.

Tax: mounted. Publ: Gould 1839; Schlegel 1862d; van

Grouw & Steinheimer 2008.

Pedestal label: [one hand] Circus cinereus / m. Cat No 7. / voy: Darwin. / 4 Janvier 1837 / Malouines.

Pedestal underside: [one hand] No 7 / Circus cinereus / 20 / Jong ♂ / reis / van / Darwin / frank 1860 / 4 January 1837 / Oost. Falkland-eiland.

Schlegel 1862d (Tome II, 13: 5–6): Circus cinereus, Cat 7, ♂ au premier plumage, tue le 4 Janvier 1837, ile orientale des Malouines, voyage C. Darwin.

Remark: The collection site on the label, underside and in Schlegel 1862d differ. The underside and Schlegel 1862d identify the specimen as young male but lacks at the label. Only Schlegel’s handwriting appears under the base of the pedestal.

This bird is discussed by van Grouw & Steinheimer (2008), as the missing bird from 4 January 1837, however, all notes have been subsequently added and no original data is available on or from the specimen. Possibly at one stage the original label was present. Darwin donated at 4 January 1837 mammals and 450 birds of HMS Beagle expedition to the Zoological Society of London (e.g. to John Gould to described them), 34– 39 specimens that are still in existence from the Society arrived in 1839, 1841 and 1856 at the British Museum. The Society’s labels recorded donor’s name, the acquisition date and Darwin’s specimen’s numbers (e.g. C. Darwin Esq, Jan 4 1837) ( Steinheimer 2004).

Another notable remark we find on the underside as the specimen was reportedly purchased from Frank in 1860. The other 5 from 7 birds from HMS Beagle expedition in Naturalis arrived in 1863 ( Steinheimer 2004, van Grouw & Steinheimer 2008). The largest numbers of birds from The Falklands were those that arrived in 1859–1863 collected by C.C. Abbott (see this paper). At 30 April 1860, a large load arrived from Abbott via Frank at Naturalis, and amongst the specimens were 3 Circus .

Cinereous Harrier Circus cinereus Vieillot, 1816

[RMNH. AVES.191476]. Loc: East Falkland (ca.

51° 41′ 40″ S, 57° 51′ 10″ W). Date: in either 1858 or

1859. Col: C.C. Abbott. Age/sex: young ♂. Acq: via John

Gould and Gustav Adolph Frank Sr. Status: extant, ac-

cessed 18 December 2012. Tax: mounted. Pub: Abbott

1860, 1861; Gould 1859; Schlegel 1862d; Sclater 1860,

1861, 1862.

Pedestal label: [one hand] Circus cinereus / Cat No 8 / pr. Mr. le Capitaine / Abbot / 1860 / Malouines.

Pedestal underside: [one hand] 22 Circus cinereus / No.8 / ♂ jeugdig kleed / Abbot / Frank 1860 / Oost Falkland.

Schlegel 1862d (13: 5–6): Circus cinereus, Cat 7, Male, Malouines, recueilli par le Capitaine Abbot, abtenu en 1860.

Remark: The collection site on the label, underside and in Schlegel 1862d differ. The name Abbott was transcribed incorrectly at label, underside and in Schlegel. Both the underside and Schlegel 1862d identify the specimen as male, but only the former identifies it as young. The bird was ac- quired through the Amsterdam-based dealer Gustav Adolph Frank and arrived on 30 April 1860 (see Kelp Goose RMNH. AVES.230433 as for C.C. Abbott). Only Schlegel’s handwriting appears under the base of the pedestal.

Variable Hawk Geranoaetus polyosoma polyosoma

(Quoy & Gaimard, 1824) [RMNH. AVES.191227]. Loc:

Falklands (ca. 51° 41′ 0″ S, 59° 10′ 0″ W). Date: in either

1858 or 1859. Col: C.C. Abbott. Age/sex: adult ♂. Acq:

via John Gould and Gustav Adolph Frank Sr. Status: ex-

tant, accessed 18 December 2012. Tax: mounted. Pub:

Abbott 1860, 1861; Gould 1859; Schlegel 1862d; Sclater

1860, 1861, 1862.

Pedestal label: [one hand] Buteo polyosoma / m. Cat No 1 / voy. Cap. Abbot / Falkland.

Pedestal underside: [two hands] 30 polyosoma / ♂ erythronotus / eye Yellow, feet yellow / Cat No 1 / reis van / Capt Abbot / Frank 1860 / Falklands.

Schlegel 1862a (Tome II, 6: 12–13): Buteo polyosoma, Cat 1, ♂ au plumage parfait, mais le gris du dos montrant encore des traces tres sensibles de la teinte rousse de l’habit de passage; ile orientale de Falkland, voyage du Capitaine Abbot, obtenu en 1860: iris de l’oeil et pieds jaunes (Abott).

Remark: One generic and two specific names are cited, with the primary binomial on the label agreeing with Schlegel 1862d. The name Abbott was transcribed incorrectly at label, underside and in Schlegel. The underside, and Schlegel 1862d identify the specimen as male, but only the latter identifies it as an adult. For information on the Amsterdam-based dealer Gustav Adolph Frank and C.C. Abbott see: Kelp Goose RMNH. AVES.230433.

Variable Hawk Geranoaetus polyosoma polyosoma

(Quoy & Gaimard, 1824) [RMNH. AVES.191228]. Loc:

Falklands (ca. 51° 41′ 0″ S, 59° 10′ 0″ W). Date: –. Col:

–. Age/sex: ♀. Acq: via Gustav Adolph Frank Sr. Status:

extant, accessed 18 December 2012. Tax: mounted. Pub:

Schlegel 1862d.

Pedestal label: [one hand] Buteo polyosoma / f. Cat No 2 / pr Mr. Frank / Falkland.

Pedestal underside: [two hands] 46. polyosoma / B. erythronotus / Falco tricolor ♀ d’Orbigny / voy.pl3.fig2 / Cat No 2 / pr Mr Frank / Malouines et Chili.

Schlegel 1862a (Tome II, 6: 12–13): Buteo polyosoma, Cat 2, Femelle, habit de passage, a manteaux et scapulaires d’un roux rouygeatre uniforme; iles Falkland, pa Mr. Frank.

Remark: The collection site on the underside differs from that in Schlegel 1862d. Only one name source is mentioned, d’Orbigny on the underside. Three generic and three specific names are cited, with the primary binomial on the label agreeing with Schlegel 1866. For information on the Amsterdam-based dealer Gustav Adolph Frank see: Kelp Goose RMNH. AVES.230433.

Variable Hawk Geranoaetus polyosoma polyosoma (Quoy & Gaimard, 1824) [ RMNH. AVES.191229]. Loc: Falkland (ca. 51° 41′ 0″ S, 59° 10′ 0″ W). Date: –. Col: –. Age /sex: ♂. Acq: via Gustav Adolph Frank Sr. Status: extant, accessed 18 December 2012. Tax: mounted. Pub: Schlegel 1862d .

Pedestal label: [one hand] Buteo polyosoma / m. Cat No 3 / pr. Mr. Frank / Falkland.

Pedestal underside: [two hands] 34. polyosoma / B. erythronotus ♀ / ♂ / Quoy / Cat No 3 / Frank / Falkland.

164 Justin J. F. J. Jansen

Schlegel 1862a (Tome II, 6: 12–13): Buteo polyosoma, Cat 3, male, habit de passage moins avance que celui du NO 2; roux rougeatre uniforme; iles Falkland, par Mr Frank.

Remark: Sexing is absent at the label, underside identifies ♂ as female, and Schlegel 1862d indetfies the bird as ♂. For information on the Amsterdam-based dealer Gustav Adolph Frank see: Kelp Goose RMNH. AVES.230433.

Variable Hawk Geranoaetus polyosoma polyosoma

(Quoy & Gaimard, 1824) [RMNH. AVES.191231]. Loc:

Falkland (ca. 51° 41′ 0″ S, 59° 10′ 0″ W). Date: –. Col: –.

Age/sex: adult ♂. Acq: via Gustav Adolph Frank Sr. Sta-

tus: extant, accessed 18 December 2012. Tax: mounted.

Pub: Schlegel 1862d.

Pedestal label: [one hand] Buteo polyosoma / m. Cat No 5 / pr. Mr. Frank / Falkland.

Pedestal underside: [two hands] 38 / polyosoma / Buteo erythronotus / King / jeune / Cat No 5 / pr. Frank / Malouines.

Schlegel 1862a (Tome II, 6: 12–13): Buteo polyosoma, Cat 5, ♂ au premier plumage, iles Falkland, par Mr. Frank.

Remark: The collection site on the label, underside and in Schlegel 1862d differ. Both the underside and label identify do not sex the bird, but Schlegel 1862d identifies it as an adult ♂. Only one name source is mentioned, King on the under- side. For information on the Amsterdam-based dealer Gustav Adolph Frank see: Kelp Goose RMNH. AVES.230433.

Variable Hawk Geranoaetus polyosoma polyosoma

(Quoy & Gaimard, 1824) [RMNH. AVES.191232]. Loc:

East Falkland (ca. 51° 41′ 40″ S, 57° 51′ 10″ W). Date: in

either 1860 or 1861. Col: C.C. Abbott. Age/sex: adult ♂.

Acq: via John Gould and Gustav Adolph Frank Sr. Sta-

tus: extant, accessed 18 December 2012. Tax: mounted.

Pub: Abbott 1860, 1861; Gould 1859; Schlegel 1862d;

Sclater 1860, 1861, 1862.

Pedestal label: [one hand] Buteo polysoma / m. Cat No 6 / voy. Cap. Abott / Falkland.

Pedestal underside: [two hands] 40 polyosomoma / ♂ / Cat No 6 / Reis van / cap. Abbot / Frank 1862 / Oost–Falkland.

Schlegel 1862a (Tome II, 6: 12–13): Buteo polyosoma, Cat 6, ♂ au premier plumage, iles Falkland, voyage du Capitaine Abbot.

Remark: The collection site on the label, underside and in Schlegel 1862d differ. The name Abbott was transcribed incorrectly at label, underside and in Schlegel. Both the underside and Schlegel 1862d identify the specimen as male, but only the latter identifies it as an adult. For information on the Amsterdam-based dealer Gustav Adolph Frank see: Kelp Goose RMNH. AVES.230433. Note the difference in latin names on label and underside.