I'm afraid Gillian has proved to be a weak presenter. It hasn't improved from last year. Her halting style of delivery, pausing in the wrong places in sentences is annoying, and in one short section, she used "Now" to start every sentence - 8 times in total. The shame is that it's detracting from what ought to be a highlight of the show - wildlife in the Shetland Isles, and particularly otters.
That is the key point in all this. Whatever her talents, presenting to camera isn't one of them. That's not her fault. She was given an opportunity and took it, but it clearly isn't working. I don't do Twitter, but my daughter tells me there is a huge amount of criticism of her performance on there, too. Surely the people who put Springwatch together must take note.