Second feral and cameras to monitor cats?

Hi I just joined today.  I have a feral cat that started coming to be fed last year and all through the horrible winter.  So this year I built a little chalet from wood (a "Wee-Hoosie"), with lots of insulation and straw, and a 50W red heat bulb and a thermostat.  Very quickly he understood who that was for!  And he would go in for lengthy naps.  I also built a "Catfeteria" for him similar to the "chalet" but make of a plastic bin, also very insulated and wormed up by another 50W bulb and thermostat.  This was so his food and water would not freeze.  And it has worked so well.  Until recently when he has gone on lengthy walkabouts precisely when it was colder!  I started to suspect he has another feral lover or has found himself another place...who knows?  He still comes but not as eagerly as before.  He used to be right there am and pm waiting for his chow.

Now I found that a little girl  went into the Catfeteria as well!  Could this be the reason for the feral's change of behavior?  II have a feeling this one has a home but I don't know yet. This is a problem because if she has a home, someone would be feeding her and she is eating my feral's food.  But if she is feral as well....what to do?  The Catfeteria has room for only one.

So I want to buy one or two cameras like Myra T67.  Could you please tell me where you bought it or maybe what is called?  what the brand?  It would be so much fun as well as a help deciding what to do next.  Thanks to all of you for your support! 

Hi, I started out with just a couple ferals, now I know of a least 6 that come around.The cats seem to spread the meows around that there is food and shelter. I had to make a couple more cat houses out of large Styrofoam containers which I get at petsmart. When I need them I just call and they save them for me. I use a heated cat dishes for there food and water.The camera I have is called a Defender indoor/outdoor Digital Wireless DVR Security System you can buy them with one or more cameras. I got mine at Walmart. It comes with a 7 inch monitor.It also has Night Vision. I love mine, I can see whose coming and going. I had bought the baby monitor first so I use that in the garage.

Myra

Thank you for caring for the ferals and wanting the very best for them.   You didn't mention whether or not you have spayed/neutered the ferals.  This is an absolute must.  Ferals who are not spayed/neutered will quickly multiply as well as fight for territory and spray too.  If you have not done TNR yet please do so.

I have several cameras that are outdoor wireless.  I use Foscam 8905 or 8904.  I have purchased them on Amazon as well as Ebay.  They come with a dydns website so you can monitor away from home on a smart phone, computer or ipad.  I love mine.