In the last week of Dec and on the CBC count day, I carried out a number of
stationary counts from a parking lot at IC to see what was moving in the
mornings. There was regular southbound passage of redpoll flocks, at least
in the first two hours of daylight. For example, on Jan 1 I had three
southbound flocks, totally ~130, from 7:45-8:45AM.
The only other passerine species moving was crow, with a steady trickle
southbound down the east side of the inlet valley in the morning. Beginning
at some point in the early afternoon, there appeared to be a return
northbound flight of crows. During my observations I saw no northbound
flocks of redpolls.
My sense in watching the same phenomenon at my house that Laura described is
that they occasionally take breaks that are unrelated to normal back and
forth from being spooked or from real predators.
Bill E
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