Fig. 2From: Multi-level comparisons of cloacal, skin, feather and nest-associated microbiota suggest considerable influence of horizontal acquisition on the microbiota assembly of sympatric woodlarks and skylarksVenn diagrams of co-occurring OTUs among sample types for woodlarks and skylarks. a, b Comparison of internal (cloaca) and external (brood patch skin and feather) communities. c, d Internal and environmental (nest material and surface soil) communities. e, f External and environmental communities. g, h Environmental communities of woodlarks and skylarks. Numbers in each compartment denote the number of unique and shared OTUs of the (non-)overlapping communitiesBack to article page