Petrel extinction in Macaronesia (North-East Atlantic Ocean): the case of the genus Pterodroma (Aves: Procellariiformes: Procellariidae) Author Rando, Juan C. Departamento de Biología Animal, Universidad de La Laguna (ULL), E- 38206 La Laguna, Tenerife-Canary Islands, Spain Author Pieper, Harald Ulmenstrasse 21, D- 24223 Schwentinental, Germany Author Pereira, Fernando Centre for Ecology, Evolution and Environmental Changes (Ce 3 C) and Azorean Biodiversity Group, Universidade dos Açores, Rua Capitão João d’Ávila, Pico da Urze, 9700 - 042 Angra do Heroísmo, Terceira, Açores, Portugal Author Torres-Roig, Enric Institut Mediterrani d'Estudis Avançats (CSIC-UIB, Center of Excellence María de Maeztu), Ctra. Valldemossa km 7.5, 07122 Palma - Balearic Islands, Spain Author Alcover, Josep Antoni Institut Mediterrani d'Estudis Avançats (CSIC-UIB, Center of Excellence María de Maeztu), Ctra. Valldemossa km 7.5, 07122 Palma - Balearic Islands, Spain & Affiliated Researcher ad Honorem of CSIC, Institut Mediterrani d'Estudis Avançats (CSIC-UIB, Center of Excellence María de Maeztu), Ctra. Valldemossa km 7.5, 07122 Palma - Balearic Islands, Spain jaalcover@imedea.csic-uib.es text Zoological Journal of the Linnean Society 2024 2024-10-25 202 2 1 15 https://doi.org/10.1093/zoolinnean/zlae123 journal article 306805 10.1093/zoolinnean/zlae123 24f93626-60bf-4b47-ac00-e2c1648256a4 0024-4082 14544813 2E1B731-EFAB-4791-A5F3-C32775EB6AE0

Table 2. Skull and mandible measurements of current species of Pterodroma (Pt. madeira from Madeira Island, Pt. deserta from Bugio Islet, Madeira Archipelago, Pt. feae from Cape Verde Archipelago, and Pt. cahow from Bermuda Island) and Pt. zinorum from Pico Island (Azores Archipelago), Pterodroma sp. A from North Dunes of Porto Santo (Madeira Archipelago), and Pterodroma sp. from Canary Islands. Sample size, mean length ± standard error (mm), and range are given. Measurements as in Rando (2002).

	Pt. madeira	Pt. deserta	Pt. feae	Pt. cahow	Pt. zinorum	Pterodroma sp. A	Pterodroma sp.
	Madeira	Bugio	Cape Verde	Bermuda	sp. nov.	Porto Santo	Canary Islands
					Pico
Skull
Length	(1) 66.7	(3) 74.2 ± 1.5	(1) 71.3	(1) 71.7	(3) 64.8 ± 1.8	(1) 72.2	(1) 76.7
		76.3–72.7			66.4–62.3
Height	(1) 19.7	(3) 20.4 ± 0.1	(1) 20.2	(1) 20.1	(5) 20.3 ± 0.2		(2) 23.1 ± 0.7
		20.3–20.4			20–20.4		23.6–22.6
Width	(1) 26.7	(3) 29.5 ± 0.7	(1) 28	(1) 28.8	(1) 26.3		(1) 30.1
		30.2–28.6
Interorbital width	(1) 9.6	(3) 10.1 ± 0.1	(1) 10.1	(1) 8.5	(5) 9.7 ± 0.6	(2) 9.6 ± 0.1	(2) 10 ± 0.9
		10.1–10			10.3–8.7	9.6–9.5	9.3–10.7
Maxila dorsal length	(4) 32.6 ± 0.6	(3) 36.8 ± 0.4	(1) 35.3	(1) 35.2	(2) 31.4 ± 1.2	(1) 34.7	(1) 39.5
	33.6–31.8	37.1–36.2			32.5–30.2
Maxilla length	(3) 29.1 ± 0.4	(3) 31.5 ± 1	(1) 31.6	(1) 30.9	(2) 26.2 ± 0.2	(1) 29.9	(1) 33.1
(from jugal articula-	29.6– 28.6	32.9–30.8			26.4–26
tion)
Culmen length (from	(6) 18.5 ± 0.4	(3) 20.2 ± 0.8	(1) 19.6	(1) 19.6	(3) 16.9 ± 0.9	(1) 18.8	(1) 21.3
anterior edge of narina)	19.2–18	21.2–19.5			17.9–15.8
Culmen width	(3) 11.1 ± 0.7	(3) 13.2 ± 0.5	(1) 13		(1) 11.1		(2) 14 ± 0.5
	11.8–10.1	13.8–12.7					14.4 –13.7
Width of the	(4) 8.8 ± 0.4	(3) 10.8 ± 0.2	(1) 10.4	(1) 10.1	(5) 8.5 ± 0.3	(1) 8.9	(2) 11.6
nasofrontal join	9.1–8.1	11–10.6			8.9–8.1		11.6–11.6
Mandible
Length	(1) 52.35	(3) 58.4 ± 0.6	(1) 56.9	(1) 60.2			-
		59.2-57.6