Whats eating the fruit of the blood orange tree?
Whats Eating the Fruit on the Blood Orange Tree?
Certified GKH Gardening Expert
This could be a large number of things. Can you include some pictures, so that I might be able to see what the damage looks like? I will include a link to common citrus problems, so that you can get a better idea of what's happening, and although the pest article is about limes, the pests are generally the same for all citrus.
Here is the link to common lime pests: https://www.gardeningknowhow.com/edible/fruits/lime/problems-lime-trees.htm
Here is a link to several articles on the orange tree: https://www.gardeningknowhow.com/edible/fruits/oranges/