It was a beautiful day, not a cloud in the sky, bright, sunny, you could see for a million miles

So, no good for training pigeons then.

I don't know why, but somewhere I picked up the notion that very bright clear days are a disaster waiting to happen, as far as training pigeons is concerned.
So, I looked at the forecast, partly cloudy, and postponed until tomorrow.
I'd be keen to hear what others think about it.