Can it really be Spring?

I have shown the flower of our Strelizia regina on many occasions in the past.
 
It usually flowers in April each year, i.e. spring, and suddenly the two plants are producing flower spikes and today this once burst into life.
 
We have at least three more flowers spikes to go.
 
Perhaps it is reverting to the seasons of its native South Africa?
Or Global Warming?
Or our conservatory is too hot?
 
Or……..