If you compare this photo of a great blue heron stretching with the grackle from yesterday, you'll see they use an all but identical technique. In the hours (and I mean hours!) I have watched this particular great blue heron, I have only seen it stretch one time, so it is not something they do regularly. The most noticeable characteristic when you are watching is how it is done in slow motion. When you think about how humans stretch, though, it is usually a slowed-down process also.
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