TableĀ 2.

The top four threats associated with extinct (EX) species in each taxon, and the percentage and (in parentheses) numbers of extinct species for which each threat was listed. Only three threats are listed for reptiles, because the percentages for the fourth- to seventh-ranked threats were all equal (17%). Alien species (AS) is highlighted in italics. Other threats are: AG, agriculture and aquaculture; CC, climate change and severe weather; BR, biological resource use (overexploitation); PO, pollution; SM, natural system modifications; UR, residential and commercial development (urbanization).

taxonstatusrank 1rank 2rank 3rank 4
plantsthreatAGBRURAS
% (number)59 (19)44 (14)34 (11)28 (9)
amphibiansthreatASAGBRPO
% (number)67 (10)60 (9)53 (8)47 (7)
reptilesthreatASBRAG
% (number)67 (4)50 (3)33 (2)
birdsthreatBRASAGSM
% (number)70 (83)60 (71)17 (20)8 (10)
mammalsthreatASBRAGSM
% (number)70 (30)40 (17)26 (11)7 (3)