I moved to Vancouver island from Alberta 3 years ago, and I keep hearing this bird.
A friend from Vancouver said she has heard this bird call all her life, but nobody knows what it is.
Apparently it is a very common bird here, but not on the parries.
Enclosed is a short video I shot in my backyard in Nanaimo today. On it you can hear the call, it sounds a bit like a rattle.
What kind of bird is this??