ML145858

影音備註

NOTES: gave two types of calls; flight call & another as they are swarmed near the nests which were located on a rock face above the road; individuals were seen inside the nests (presumably used as a roost site give the time of year). Nests similar to Cliff Swallow, but no nest extension beyond the hole, ie., the mud nest was not elongated. Number of individuals=UU150+;. Other Behaviors: Establish Flock Contact, Social Context: Colony. Habitat: Montane Grassland.