Starling Fledglings (Sturnus vulgaris)

First youngster showed up yesterday... five days earlier than last year. Not great light, but showing what they do as soon as they arrive: head for the bird baths or a muddy puddle. Which means I'm on Cat-watch until the fledglings are able to fly when wet (There was nine hiding huddled-up soaking wet under a bush a while ago, all have made it to one of the safe(ish) perches that I position in the garden - some perches are like ladders made of twigs that they can clamber up to get to one of the trees/bushes... they often only climb half way and refuse to take the last few steps to relative safety... no idea why.)