Figure 1: Characteristics of each US state's top 100 list.

(a) Number of absent species in the top 100 likelihood list for each state of the contiguous USA. (b) Mean number of other states in the contiguous USA an absent species in the top 100 likelihood list is found (e.g. for Alabama, the 23 absent species in its top 100 likelihood list are found, on average, in 31 other states). (c) Percentage of absent species in a state's top 100 likelihood list found in at least one neighbouring state.