The early "Bert" catcheth the worm

Did you know that Bert loves birds? He also likes to be well-prepared and is willing to put the effort to getting a job done properly, thus the early "Bert" catches the worm.

Here is Bert with a new piece of public art at the Olympic Plaza. This is one of Myfanwy MacLeod’s 5.5 metre (18-foot) tall sparrows - can you tell whether it is the male or the female?