I didn't really see her face, but at her feet were several cooing pigeons. Every now and again, a shower of birdseed would tumble from her hand. She was wearing a heavy-looking grey coat, keeping out the late morning winter chill. I motioned to my colleague, cameraman David McIlveen, to try to take her picture - but she sensed he was approaching, emptied the brown paper bag of birdseed and briskly walked away.

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