2020 and same story-no new fawns

I have 4 does who live close to the house and they are all related.One that is called split ear has been here for 16 years and she was mature when she started coming.Must be in her 20s..Yes deer will get that old if left alone and stay healthy..They were all pregnate and all had there fawns about 2nd week of May.Pretty simple to figure out.You watch thier bellies get big all winter then they disappear for a few days and them they start showing up again for their goodies and they are skinny..Its usually several weeks before the fawns start coming with them but again we wait and wait and no fawns show up.I have several cameras out to see what might be killing them..I have never found the remains of any deer so I rule out sickness and I only have a few of coyote and one bobcat..but this last year I have had a good size bear showing up..Camera showed him once on the deck..I have no Idea why he is here .There is no food of any kind around and he has not bothered the garden so far.I sure hope he is not killing them I would hate to kill him-but I might build a live trap..