Some geckos can make sounds, but I don't know of any that warble or make bird like sounds. They are probably either Gray Treefrogs or Green Treefrogs. Both live in the trees and shrubs around your house. If you leave the porch light on at night for a while, the bugs flying around the light will probably attract any treefrogs nearby. It will also attract the geckos. As their names imply, the Gray treefrog is generally gray and the Green treefrog is green. The gray treefrog can also be green, so it is sometimes hard to tell which you are looking at. The green treefrog has a white line that runs from just below the eye to the hind legs. The gray treefrog does not have this line and the undersides of their hind legs generally have an orange to yellow tint.

That isn't a gecko, it looks like an old world species of Lacertid lizard or one of the South American lizards in the family Teiidae. It might help a bit if you suggested where you were, at least what continent you were on. This post was edited by FHFchrish on Wed, Oct 9, 13 at 12:35

Thanks, y'all. I bought the form from Shelby, the teacher at the Hacienda last year in Puerto Vallarta - that one and the tulips. She had tons of cut outs. I was sorry later that I had bought such fiddly little things, but since I paid $25.00 each for them, I was forced to mosaic them. They w/be very easy to cut from pine or MDF - don't know why YET that I bought things I could have made. Thanks for your comments.

We live in an old queenslander house and it is virtually impossible to seal all the gaps. We share the house with at least 2 Carpet snakes (in the roof or under the house I hope) They regularly shed their skins around the place. The geckos are breeding up - which is great to see, we all love to watch them hunting. We dont spray and the only cockroaches we see usually fly in. I would rather die of gecko poo poisoning than exposure to pesticide. We have numerous spider webs around the verandahs - I just cant bring myself to destroy all that work, and we seldom get redbacks which our more houseproud neighbours have in plague proportions. The gecko poo is nothing compared with the deposits of the micro bat which rests in the toilet and misses every time, instead ,leaving a collection on the floor beside the pedestal - but all this is nothing when I think of the alternative. I dont want to live in an airconditioned, toxic, sealed up box so I just live and let live and hope that the carpet snakes dont come through the open doors and into my bed while Im in it.