I have 9 call duck eggs incubating at the moment. Today is day 26. I've been candling to check for internal pips but haven't seen any. However, some of the eggs have seriously decreased blood vesseling or none at all but are still moving. Do you think I should help them out and pip above the airsac for them. I'm just worried about lack of oxygen if they are losing their blood supply. Any help would be great, thanks!