My husband' s cardiologist is a facc. We are moving, and when we asked if he knew of a good one in nc, he said the facc would be good to look fot, because they have sat for the test nand keep current. That being said, he also told us some older drs. Have not sat for the test and are better than some facc ones.
Deathwatch beetle. Deathwatch beetle (Xestobium rufovillosum), an anobiid, or borer insect, of the family Anobiidae (insect order Coleoptera) that makes a ticking or clicking sound by bumping its head or jaws against the sides of the tunnels as it bores in old furniture and wood.
Bats use this to avoid flying into objects. The faster clicking is likely because the bat has detected an insect and the bat needs more accuracy to catch its prey. You can use the player below to listen to the call or get the mp3 file here.