I currently have 5 adult guineas (one female and 4 males). This year was the females first year to lay. I've never seen them mate but I've incubated her eggs 3 times. Each with 14-16 eggs. The first 2 hatches only had 2 keets. The last hatch had only 5 fertile when I candled at day 10. Four hatched but one had deformed toes and a deformed wing . The fifth one never hatched. I've only hatched chickens prior to this and every egg that candled as fertile hatched. Is this common in guineas?