From left are elm, center- apple & maple on right. All have black walnut roofs. The shiny object in the center is a quarter for size reference. These were pieces of branches.
Lovely little bird houses, especially the one on the left. I like how you left some of the bark on it.
The candle cups are nice also. Careful how deep you bore them as the flame has a higher chance of contacting the wood if the protective cup is below the rim.