At this time of year (between April and June, peaking in May) there is an increased danger of deer running onto the road, as young ones leave their breeding areas.
This can of course happen at any time of day, but the risk is apparently greatest around sunrise and between sunset and midnight.
Guidance to motorists from the AA is here.
The other time of increased danger is from October to December.
We have a fair number of deer in our area, and sadly a small but significant number of accidents when vehicles collide with them. The latest reported accident was last weekend between Helmsley and Sutton Bank.
Mind how you go.