Garden Visitors & Residents

There are a great number of garden visitors lately (they must see something I do not) yellow lady bugs? I have never seen them and they appear rather shy, but the garden is full of lots of ladybugs and I am unsure if my garden itself is infested with what they enjoy feasting on, or if it is because my garden is was slightly more mature than many others in the neighbourhood to take up residence. The birds come on Fridays (garbage day) and feast usually on some poor residents garbage bag contents. But since I sprayed the nematodes they have been coming in rgeat numbers to eat the wormy things you see in the chops of this hungry wingman.