Went out and checked on our 2.5yr old angus heifer at lunch. She's been gettin' loose for a few weeks and her udder has been filling up but not as big as I should like it. Her back two quarters are moderatly sized but her front two are barley developed, just little tight tents above her udders. I would imagine she'll swell up when she gets that calf on her. Well, been checking to see if her teats are full and this noon they were, not bulging but definatly had something in them even accidentaly got a little milk out. They were empty yesterday. I figure she should calve soon. Does anyone else have some clues the use to determine when they'll drop?