Thank you as always for your advice. I have new formula on the way - my mom lives in the city where i had bought the previous formula - she went there today and all the bags were expired so she advised the workers and their reply was "oh, ok". That was it! She is couriering me some new formula. I had bought some brown cheerio looking food that is for weaning - you mix it with warm water and it is supposed to imitate regurgitated food - they seem to be taking to it ok - i make sure they have fresh water and different types of food available - mom and dad are both feeding them - but their crops don't appear full full like they did when i was feeding them formula. I will keep my eye on them. Thank you again!