Some gyps are just not good brood gyps, if they are out of the heat and your givin her plenty of food then I'd say she's just not a good momma dog, all dogs aren't. I give my gyps about 3/4 cc of ivomec injected a few days before they drop and they have nice healthy pups and plenty milk, I start Gettin them on food by 2wks old usually anyway and give the bitch dog a break so they don't draw her down too bad but if she's Runnin outta milk feed her sum table scraps, if she just won't let em nurse she just mite not like Bein a momma 
