I'm so sorry for all of your losses. I lost my first hen, Apricot, to a weasel (along with a New Jersey Giant rooster, Seth, and Apricot's sister, Peach) in the spring of 2007. She was my first chicken ever and wasn't even a year old yet. She had spent a peaceful spring day with her sister and rooster, eating grass and enjoying the weather after being locked up most of the harsh winter. The next day she was gone. Her sister and her each left us an egg before they died.
I was so sad and still am sad about it today.
But we all must remember that while it is terribly sad to us and we wish that they hadn't died, especially if we had bonded so much with them, they are now up in heaven and are at peace. It's OK to miss them, but try not to feel sorry for them. Remember that they must all be up there together, free ranging together and eating the most delicious grass they have ever had and taking wonderful dust baths.
Remember how peaceful and happy they must be, and it will make you feel better because you know that they will be OK and someday you will see them. And what an amazing, wonderful day that will be, when you are reunited with those that you cried over when they passed. And I'm sure they will be just as happy to see you, too!