Tricolored bats carry New Jersey’s most severe state rank among bats in this tier, NatureServe S1, critically imperiled, consistent with the species’ global IUCN Vulnerable status and the steep declines white-nose syndrome has driven across the Northeast since the disease first appeared. There are just 8 records since 2000, all logged on iNaturalist and 7 of them also in GBIF, thinly spread across six counties and seven separate months with no single peak.
That even scatter, one or two records most months from March through December, is itself informative: it suggests surviving bats are being picked up individually and incidentally rather than in the concentrated fall-swarm pattern seen in more heavily hibernaculum-monitored states, reinforcing how small and dispersed New Jersey’s remaining population has become.
Full species profile
