The Lass-a-lack is a strange bird from the Dr Seuss book Scrambled Eggs Super! Under his tail is a bird called the Shade-Roosting Quail.
The Lass-a-Lack, Shade-Roosting Quail, Spritz, Flannel-Wing Jay, Beagle-Beaked-Bald-Headed Grinch, and Mop-Noodled Finch were not in their nest laying eggs that day while Peter T. Hooper went out egg poaching.
He is one of the three birds counted in Dr. Seuss's 123.