Cozumel Harvest Mouse (Reithrodontomys spectabilis) is assessed as Critically Endangered because this species is known only from Cozumel Island, Mexico where it is estimated to exist in small subpopulations (< 50 individuals/subpopulation) with an estimate of less than 200 individuals in the entire population. The species has not recovered from negative impacts from introduced species…
Institution: Universitat Autònoma de Barcelona
Ridgway’s Hawk
Ridgway’s Hawk (Buteo ridgwayi) is listed as Critically Endangered because it has a small and fragmented population, which was previously in steep decline. Successful conservation action has now reversed such declines and the species is observed to be increasing throughout both its largest extant population in Los Haitises National Park and additional reintroduced populations. If…
Jico Deer Mouse
Jico Deer Mouse (Habromys simulatus) is listed as Critically Endangered because it is known from only two subpopulations: one is likely now extinct, and the other has extremely low population numbers (less than or equal to 50). Most of the mature individuals from are in one subpopulation. If more habitat continues to disappear, this species…
Galapagos Penguin
Long-term monitoring of the Galapagos Penguin (Spheniscus mendiculus) indicates that the population is fluctuating, primarily as a result of marine perturbations that may be becoming more extreme through climate change. These perturbations have caused an overall very rapid population reduction over the last three generations (31 years). In addition, the species has a small population…
Roatán Spiny-tailed Iguana
Roatán Spiny-tailed Iguana (Ctenosaura oedirhina) has an extent of occurrence of 294 km2 measured by minimum convex polygon. Its area of occupancy is 191 km2 using a 1×1 km grid overlay, although the actual occupied area of stable populations is likely closer to 6 km2. The population is severely fragmented across Roatán, with the majority…
Endangered
A taxon is Endangered (EN) when the best available evidence indicates that it meets any of the criteria A to E for Endangered, and it is therefore considered to be facing a very high risk of extinction in the wild. Learn more at: https://www.iucnssg.org/iucnredlist.html
Vulnerable
A taxon is Vulnerable (VU) when the best available evidence indicates that it meets any of the criteria A to E for Vulnerable, and it is therefore considered to be facing a high risk of extinction in the wild. Learn more at: https://www.iucnssg.org/iucnredlist.html
Least Concern
A taxon is Least Concern (LC) when it has been evaluated against the criteria and does not qualify for Critically Endangered, Endangered, Vulnerable or Near Threatened. Widespread and abundant taxa are included in this category. Learn more at: https://www.iucnssg.org/iucnredlist.html
Vancouver Island Marmot
Vancouver Island Marmot (Marmota vancouverensis) is listed as Critically Endangered because in 2016 it was estimated that there were between 90-130 individuals occurring in two subpopulations in the wild. Its area of occupancy is less than 10 km², and there has been extensive clear cutting of its forest habitat. A population reduction of greater than…
Saint Lucian Whiptail
Saint Lucian Whiptail (Cnemidophorus vanzoi) is listed as Critically Endangered on the basis that this species effectively represents a single, severely fragmented population, and is at continual risk from the possible introduction of invasive mammals to any or all of the four small islands where the species presently survives, which would lead to a projected…