The last couple years I had Bluebirds nesting in snags in the back yard (both snags have since fallen over). I cut way down on the food in the feeders, which I usually do anyway in the summer, because I didn't want to attract House Sparrows. Would put out a little BOSS, but only put out the home-made suet nuggets if the Bluebirds wanted some. This Spring, I had a pair of Baltimore Orioles nesting in a large Pin Oak right above the feeders. Did the same thing, cut down on the food in the feeders, because the Orioles were very territorial about the tree. They were especially aggressive towards Blue Jays, Grackles, and Crows so I stopped throwing any tidbits on the ground (like old corn chips, which the Jays and Crows like). So I would favor the security of the nesting birds. During the summer and fall, there are normally abundant natural sources of food, so feeders are not critical. Birds eat a lot of insects and feed their young insects, so they are unlikely to starve if you aren't feeding them.

I've been fortunate enough to have a pair of mockingbirds in my backyard year around for several years. They are very protective of their territory, especially to other mockingbirds. Every year, they raise two or three offspring, but run them off soon after they fledge. The only other birds they seem to tolerate are a pair of white wing doves that nest in a youpon holly tree. Maybe because the doves don't compete for the same food source. They go nuts in the spring when the flocks of Cedar Waxwings come through and strip off the remaining winter youpon holly berries, which is the mockingbirds main food source in winter. They are overwhelmed by the sheer numbers of Waxwings, but just complain loudly. The most interesting thing is they mate for life, but go through a re-bonding ritual every spring. They face each other on the ground about 2 feet apart, and the male will hop forward and place a youpon berry on the ground, then hop back. The female then hops forward, picks up the berry and hops back. They do this several times a day until they finally go off and build a new nest and lay eggs.

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.

I have barn swallow nest under my balcony, which of course just has to be where my back door is. They have already had a baby, which they were aggressive towards us when we would walk out the door, but only as we passed it. The baby has flown away. We thought we were in the clear. But it appears THEY HAVE ANOTHER EGG. I Went out to get into my pool today and BOTH of them were extremely aggressive. They were both coming at me at the same time, flying at my head and circling around to come back. Mind you, my pool is more than a few feet away. With the other egg, as long as we walked past, they would fly past as if to Warn us, but then leave us alone. This time seems to be different. They followed me. I have 3 kids that I cannot allow in my back yard because of this. I am at a loss . I can not keep 3 kids locked in my house for a few weeks. There is no baby yet that I can see.