I too just had an Eastern Black Swallowtail eclose yesterday. And I had been waiting 8 months. I was concerned that mine was out there all alone. I hope he or she finds some other swallowtails to hang out with.

As I wrote in my post, my reference was to domestic cats, not to feral or barn cats who live their lives without being fed or receiving immunizations, deworming, external parasite prevention, and other routine veterinary care. I have precise first hand knowledge of what species my cats have killed over the past 40+ years and a good idea of how many of each because they bring their quarry home to my front porch and, being well fed, only occasionally do they eat one of their game animals. I could probably count on my fingers the number of birds my cats have killed over the past decades, and among these were a few English sparrows. I would say that on average 6 to 11 baby barn swallows have fledged from nests on our front porch and eaves of the barn each year, despite the presence of our cat(s.) The parent bird who fell victim this year is the only swallow killed by one of our cats ever, so I'd say that the survival rate is highly stacked in favor of the swallows. (Seven on average x 40 some years is a large sum of swallows that have come into being on my felines' terrain.) Toxoplasma gondii only poses a threat to developing fetuses and those with severely compromised immune systems. It is important that pregnant women avoid contact with litter boxes. Other than this caution, the risks posted on the inflammatory website you posted are highly exaggerated. As I also stated, this is a moot point since my current kitty has only perhaps another year of going outdoors and I do not intend to replace her when she is gone. We will have to agree to disagree on this point.

You might check to see if you have an Audubon Society branch in the area. I'm sure they would advise you on what to do at this point. If there isn't an office in the area you could call a more distant Audubon office. In the meantime, might the babies eat mealworms?(the ones people buy for their feeders). Also, I took care of some baby birds for a friend once (don't know how that happened) and I was instructed to give them chopped up pieces of cooked scrambled egg. They liked it. Also, you could try giving them water with a medicine dropper if you are concerned about the heat in the barn. I don't know much about birds but it sounds like something has happened to the parents. I would think that their being gone for four days is a bad sign. From what I've heard birds are generally very good parents. You are so goodhearted to take this on. I hope you can get some sound advice that will relieve you about this and resolve the babies' situation. Good luck -

Neat! That little beak is just waiting for another bug/worm.