That 'map of activity' is bizarre! It's ridiculous how much seismic activity there is here. I'm pretty sure i recall those twin earthquakes - some good friends of mine were giving birth to twins on that same night. Later, when we heard that they were actually separate earthquakes, I remember we did re-remark on the coincidence, and wondered what kind of portent that might have been.

There are actually a few earthquake predicting theories around, though there aren't too many examples of people using them to accurately predict an earthquake - they seem much better at predicting them in hindsight. The most celebrated cases seem to be these onen from China:

'In 1969, a warning was issued at the Tientsin People's Park Zoo, just two hours before the earthquake struck. This warning was based upon odd behaviors in various animals in the zoo, including, but not limited to; giant pandas, deer, sharks, tigers, and yaks.'
http://en.wikipedia.org/wiki/Earthquake_prediction
Another report states:
'In February 1975 hibernating snakes abandoned their hideouts in the north-eastern city of Haicheng. The city was evacuated and February 4, the region was hit by a 7.3 magnitude earthquake. More than 1.000 people were killed, but considering the densely populated area the prediction an evacuation was considered a great success.'
http://blogs.scientificamerican.com/history-of-geology/2011/12/12/can-animals-sense-ear...

The article does qualify this by saying there were also other indicators, including a series of pre-shocks, which have been the cause of the animals being spooked.

But anyway, i am keeping an eye on the chooks.