Well I am pretty convinced now that the Cardinals are nesting in our apple tree.
Today a Squirrel was about to climb the tree and it was mobbed by a Male & female Cardinal.
Today we discovered that the two Blackberry bushes that are beside the fence 3 feet from the tree are actually Wild Blackberries. We planted a Blackberry bush two years ago and they are different plants. The Wild ones are very thorny and the Fruit is almost ripe already. The one that we planted is spreading but the fruit is not close to being ready. We have the same issue with the Wild Raspberries vs the one we planted.
I watched a Male Cardinal hover to grab a fruit off of the bush, never seen that before.
Napper
I will have a look in the morning for a nest.