Haskap berries are very popular with several species of birds on our farm. Every year we have to install bird netting to keep them from taking all of the crop. Every year several birds manage to figure out how to get into the rows. Here is a short video of an American Robin attempting to find a spot to pull back the netting to get to the berries.
Birds are a lot smarter than you think. We have heard stories of Cedar Waxwings pushing themselves under netting, grabbing some berries, and then pushing themselves back under the netting to get out. Once one bird figures it out the rest of them learn the technique, and they can wipe out your entire crop.