Figure 6: Test of range expansions using ENM.
From: Australia’s arid-adapted butcherbirds experienced range expansions during Pleistocene glacial maxima
Present day and last glacial maximum (21,000 ya) ENMs for white-throated butcherbirds. ENMs predict a northwest expansion of suitable habitats for eastern Grey Butcherbirds that could have resulted in secondary contact with Silver-backed Butcherbirds at LGM. Colours show the relative climatic suitability scores for each taxon. Regions with low suitability fall between 0.1 and 0.4 probability of occurrence, regions that are ‘typical’ of the abiotic niche of the species per taxon are 0.4–0.9, and regions that have high suitability are above 0.9 probability of occurrence. Black shows regions with suitable conditions under the less over-fit MTP threshold.
