It had been days worth of time but the time-traveler was having a rather boring go of looking for problems to fix in the past or present.
A distraction lead them to trip over a holographic flower-bed. Bruised with a mouthful of grass, insult was added by a bird dropping guano onto their head.
"Oh lucky!" exclaimed a passerby.
"Lucky?!"
"Yes, statistically! Due to the Avian Decimation?"
The time-traveler made a note to look into the event.