I agree they look like unopened flower buds. If the photos are recent, most assuredly, as kiwis flower in mid-spring in warmer climates, later in your location.
The calyx( reddish area between the stem and flowering structure is very tight, and the petals are the white part, tightly closed. If it were developing fruit, the petals would be gone, not as white as in your photo. I’d suppose that kiwi would flower in your area about midsummer.
Here’s a nice little botany lesson on the development of fruit. Which is, of course, a successfuly fertilized swollen plant ovary, often aided and abetted by insects, who are lured to the sexual parts of the plants by a dazzling array of color, intoxicating scent, delicious nectar, and nutricious plant sperm. If all goes well in the day-to-day Bacchanal, the pollen reaches the ovary and it, satisfied by the gush of attention, forms it’s next generation of being,seeds, surrounded by enticingly tasty sugar-filled juiciness, in hopes that some more mobile creature will eat the swollen ovary and then excrete the seeds, complete with ready made fertilizer, onto the dirt to make more plants.
Such a simple, wonderful system, yet amazing. From your photos, looks like your kiwis are very healthy. Hope you have a bumper crop, they are tasty!