It's so hard when it doesn't come easy

The last week has been full of distress for my whole house. My husband, cats and now the cockatiels. Mostly because of the last ones. On friday one of them started to look really sad and his feathers were puffed up most of the time. also they spent an awful amount of time on the bottom of the cage. I started researching ad reading and I realized that it was a very bad sign. They were probably cold. So I went ahead and moved them to my bedroom. Now they both look a lot better but they still won't allow me to get very close without freaking out. they barely allow me to change their water and my husband is the one that actually has to clean them up.
It turned out to be that cokatiels are vey sensitive and temperamental birds and they absolutely HATE CHANGES. Also, it takes a long time for them to get to trust a person so we have a lot of work ahead.

I must admit I feel really lost regarding how to treat them and how not to upset them. I wich I had somebody to ask. Tomorrow I'll see this lady that has cockatiels as well and she might be able to shade some light about the whole situation.
In spite of how hard has been for the 6 of us, I still love to have them with me and to be able to give them shelter in a moment of need.

Fostering Cockatiels

We have two new members in our family. They haven't got names yet and they seem to hate me with a passion (sigh) but I promised I would give them my love and that is exactly what I intend to do.
This is the story: The cockatiels belonged to this old couple. They had them for about 5 years. This couple was living with their daughter, who btw is a very wealthy lady that made a fortune with some IT companies on the 90s. She is married to this guy who also has a nice income with his own construction company.They built this "in-laws" house in their property and asked this old couple to live with them, that way they would have privacy and live comfortably till the end of their days. but after some years this sweet lady and her husband have decided that they will move to Mexico and that the old people needs to get out and with no much of a notice they took away all their furniture (which was bought with money that all the family pitched in) including their bed and now they are living with a granddaughter where there is no room for the birds. They didn't want to sell them, but give them to somebody they trust and knowing how much I love my pets they asked me if I would take them.
This whole story is horrible and it kills me to see people that has worked all their lives so hard to bring up children that will pay back in this way.Can these people get any lower? Do they need the money so badly that they need to take even the bed from their parents? And this just days from having one of them checked out of the hospital? I'm sorry for this woman because I've seen other people behave this way before and getting the worst karma (or God's punishment, whatever you prefer) for the rest of their lives. I wish them luck... with that karma they will absolutely need it.