We have [had] six Weeder Geese that are [were] about five years old who began dying for some reason. They were in our outer woods fenced area with tons of brush, weeds, plants, etc. with our three Boer goats. We also fed them every few days some grain, sweet feed and meatbird crumbles. They also have a pool area and water tank. Within the last month, two of them just died. Is it possible they starved? We brought the last two into the inner pen area in case there was something that was poisonous to them out there. [Two other geese died from predators.] We are perplexed. Any ideas?