Abstract
Subclinical doses of broad-spectrum antibiotics (BactrimTM and ClavamoxTM) were given to half of the nestlings in tree swallow broods as the other half received a placebo. There were no differences in the microbial communities between the treated and untreated birds onND5or on ND19. Physical measures on ND19 showed that treated nestlings had significantly smaller tarsi and larger mass.
COinS