Wagtails are always fun to watch! Here's a White Wagtail I saw on my morning walk hovering above the (honestly rather disgusting-looking) water with its mouth already full of insects.
I do not mind at all! I used a EOS R10 with a Tamron SP 150-600mm F/5-6.3 Di VC USD G2 at 600 mm, f/8.0 and a shutter speed of 1/2000s. ISO was set automatically by the camera. Then some light editing in Lightroom afterwards.