Who is the head in this house?

On weekends, I traditionally go for grain, hay and straw. In addition to birds of prey, granivorous birds also live in the house, hay is needed for rabbits, and straw - for bedding in aviaries. Our neighbour gave us an old bath (a mini-pond for ducks will be made from it). When I arrived, the cat Katerina conducted a thorough audit of everything that I brought. She is a real mistress in the yard, nothing escapes her attention.