We definitely notice differences year to year here - everyone aroundabout found their girls taking longer to get in the mood this last time, after two very long hard winters the years before.
Interesting, ours took longer to get in the mood too - I had put it down to a new, inexperienced ram but maybe I haven't been fair on him.
One final puzzle with my old ewe, she was in a field with 2 mature rams and it was the more senior of the mature rams was the one that got his wicked way with her. The other lay about 100 yards away merrily chewing the cud showing no interest whatsoever whereas a few of last years entire ram lambs were a bit curious.
Not sure whether this gives any clues to her genuine status or not? Ho hum, I guess I'll find out in October (oh yes, that makes another month in which I now can't plan a holiday, oops
)