No we don't...all we can do is go by vet. We didn't realize he was getting in the pastures until around Oct......But, according to another neighbor they stated he had been jumping into theirs around march and april and they think he was getting into ours as well....the vet. believes the bay Divinity is due first she believes anywhere from now til mid may. The sorrel Dutches maybe within the same time frame or a couple weeks longer. Both mares are bagging, both have softened tail heads, babies kicking a lot, just watching for more tummy dropping and temp changes.