Forest fragmentation alters microhabitat availability for Neotropical terrestrial insectivorous birds

•We quantified microhabitats of nine terrestrial insectivorous birds and forest fragments.•We directly estimated the probability of our predictions being correct.•Vegetation structure in fragments differed from a reference site.•Fragmentation-sensitive species used microhabitats that were not typical of forest fragments.•A fragmentation-tolerant species used microhabitats that were similar.