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Oh boy, I liked this one! I’m impressed by your tracking, enough so that I’ll admit I really am curious to see how you mapped it over time. Do share! Around here, it’s the Marsh Wren that’s king of the lowlands. We think they’re bossy birds, chattering away as we walk the lowlands. But then we venture into the woods and it’s the Pacific Wren that rules there. Fun birds, and they usually take a little patience to spot (though not to hear).

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Nothing exotic in my methodology ... I don’t think anyone yet is using modern tracking systems like MOTUS for these birds and certainly they weren’t when these guys started to turn up here. I have simply used records available on eBird plus some other more local sources, together with my own knowledge (I am a biologist - albeit retired) and then applied a bit of creative imagination, considered the sort of territory birds would choose to travel into (no high mountains chains, no wide lakes and rivers, stick to places where winter food can be had) and came up with what I think is a reasonably sound hypothesis. Good to know that you enjoyed it. I encountered my first Pacific Wren on Haida Gwaii this summer - Wrens are good.

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