I wang to float my better eggs under the not so good ones but the ones I've floated eggs under have just laid there first egg last night and the ones I want to float from are not due to lay there first egg on Tuesday so there is a 4 day difference and so that means they will need to sit for 22 days. So, My question is will pigeons sit eggs for 22 days or more before abandoning them or will they leave them before that. I don't want to lose these eggs