I admired her as she glided across the pool. Reaching the deep end, she slid under the water, barely rippling the surface. I watched the sunlight flickering across her submerged shadow before she bobbed up and began another graceful lap.

She was a duck: a Pacific Black duck with a sweet face and a vivid patch of emerald in her flight feathers. “I’ve always loved that colour,” I told her as she hopped out of our pool and flapped her wings. She clucked appreciatively. I think that’s when we became friends.

I might never have discovered her if not for the single and resounding “Quack!” that rang out from the bottom of our garden last Tuesday. I flung open the back door, cocked my head and strained my twitcher’s ear. “Quack!” There it was again, loud enough that I couldn’t tell where the quack ended and the echo began.