mockingbird - nest building

Our mockingbirds dine on the hollyberries, lemons, and Loquat fruit in our yard. I'm not too thrilled about this since they are not light eaters, they devour it, like pigs. The lemon tree, I've had to move closer to the screened lanai where the cats can intimidate them. I had not a lemon to speak of last year, and not as many as I should this year. Sneaks! They can have the loquats and hollyberries even though I don't get to enjoy the beauty of the hollyberries in their red stage which is the entire reason why I bought the tree. I have to keep reminding myself nature is a beautiful thing and besides, they bring enjoyment with their entertainment and free concerts, singing away nonstop, their voices so beautiful. So now they are building a nest in our hibiscus tree right at our pools edge about 5 feet off the ground and directly on a walking path. I guess they didn't notice that we happen to use this area quite a bit! We are on day 2 of the the nest building, where they gather twigs and stuff around the yard at a very fast pace, darting back and forth like supermen all day long. Forget about stepping in their path as they seem very focused! From what it looks like in my pictures, the male brings the supplies to the nest and she organizes it. The next few weeks should be interesting as we cautiously attempt to use our own yard and pool...I have read they are quite aggressive parents, fiercely protecting their young, dive bombing anyone or thing that crosses their path too closely.