We do not ever see American Robins come to our feeders although we do provide the food they tend to eat. It may be the types of feeders we use that may dissuade them or perhaps their natural food sources are more plentiful where we live.
Yesterday morning, I noticed a robin pecking through the leaves before we put the feeders out. They have a very distinctive walk and being a large bird with a rusty chest, they do stand out.
Later in the morning, hubby looked out front and noticed quite a few birds darting in and out of our holly bushes. He grabbed the binoculars and was able to determine they were robins. After doing some research I learned they often form large flocks to roost in trees or feast on berries. By the end of the day, our three holly bushes were almost devoid of their bright red berries.
Our first year in this house we had a similar experience except it was a huge flock of Cedar Waxwings that flew in and ate all the holly berries. We were shocked at how many flew in and cleaned out the berries. It was a sight to see.
I am not a huge fan of the holly bushes. To me, they are a more ornamental shrub and I like to have more native plants. But I must also admit I like having a natural food source for the birds.
Nature is certainly majestic in the layered fashion that the plants and animals rely on one another for survival. We could learn a lot from nature if we would just preserve and observe.