Parker et al. 1996 rated the priority for future research of the White-thighed Swallow at “Medium,” which may be conservative: large areas of the White-thighed Swallow’s life history remain unknown. Even simple observational studies would greatly advance our understanding of this species, for example by resolving the timing of breeding and the social mating system.
Information on extra-pair paternity in this species would be particularly valuable for across-species comparative studies on that subject, which currently suffer from a deficit of data on neotropical and subtropical species.
Data on the range of this species and each of its races, and the population sizes and demographic structure thereof, are necessary for the reliable assessment of conservation status, but currently are lacking.