American Bittern, Rondeau Provincial Park, Ontario, Canada, May 6, 2012.
A.K.A. - Stake-driver, Thunder-pumper Water-belcher, Mire-drum.
The American Bittern's yellow eyes can focus downward, giving the bird's face a comically startled, cross-eyed appearance. This visual orientation presumably enhances the bird's ability to spot and capture prey. The eyes turn orange during breeding season.
source - https://www.allaboutbirds.org/guide/American_Bittern