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They are, now Mochi's siblings come here daily as well. We recognize them because we rescued him around the corner and these ladies were present there too when we went to check on the kittens. They never came to our window until recently. It's pretty strange (but good in a way) to have the mind think that Mochi is there waiting for food and then to realize it's not him but his sisters. At least they are sterilized now because they have a mark on their ears.