starlings take nests from other birds & a nest is a kind of resource for a bird ->  starlings take resources from other birds by taking nests from other birds  starlings take resources from other birds by taking nests from other birds & if a starling takes a resource from another animal then that starling competes for resources sucessfully ->  starlings successfully compete for resources by taking over the nests of other birds  a starling is a kind of animal ->  a starling is a kind of organism  a starling is a kind of organism & if an organism can compete for resources then more resources will become available to that organism ->  if a starling can compete for resources then more resources will become available to that starling  starlings successfully compete for resources by taking over the nests of other birds & if a starling can compete for resources then more resources will become available to that starling ->  more resources become available to starlings as they sucessfully compete for resources  a starling is a kind of organism & as available resources increases , the population of an organism using those resources will increase ->  as available resources increase, the population of starlings using those resources will increase  more resources become available to starlings as they sucessfully compete for resources & as available resources increase, the population of starlings using those resources will increase -> as starlings sucessfully compete for resources, the population of starlings increases