He could linger under the covers, listening to the radio and a weatherman who predicts rain.

In modern agriculture, even airplanes and helicopters are employed for seeding, transporting, and other purposes. Radio and TV broadcast weather forecasts and other info that is of concern to farmers.

If you have fulfilled all of the above and are still not sure when to have this foal, listen to the weather forecast on the radio that has been so generously provided by those who wait.