I have 3 kiwi plants on a west facing fence. The plant on the left (1st picture) is a mature female plant that has been growing for about 6-8 yrs. In the middle (2nd photo) is a male plant and on the right is a female, both planted last year. Since the middle of April, 5 branches or vines about 2-3ft in length and about 1/4” around have been chewed off. The severed vines were laying on the ground. The 1st 2 pictures show where the vines were. In the 1st picture, the site is about 4ft off the ground. Another vine from the mature plant and the 2 from the male plant were about 15-18” off the ground. This is the first year I have encountered this. Is there anyway to tell what is doing this and if so, what can I do about it. The 3rd picture is view of all 3 plants. Thank you so much for any info you can provide. The yard is located on the San Mateo county coast, about 1/2 mile from the ocean.