In the quiet village of Flecken Zechlin, roughly 100 kilometers north of Berlin, four goose skulls sat hidden in the sediment of a 17th-century toilet shaft for centuries. When archaeologists pulled them out between 2021 and 2023, they found something unexpected: the birds' skulls were riddled with strange holes, each one a tiny window into a vanished world of aristocratic vanity and genetic tinkering.
The holes turned out to be fossilized evidence of crests — those showy tufts of feathers that crown the heads of certain geese. According to Maaike Groot, an archaeozoologist at Freie Universität Berlin who led the study published in the International Journal of Paleopathology, these four skulls represent the first crested geese ever identified in the archaeological record. "The crested geese could have been kept for display and prestige," Groot said, noting that the site had long associations with bishops and aristocrats.
The skulls were remarkably well preserved, allowing Groot and her colleagues to rule out the usual suspects. The holes weren't from butchery, animal gnawing, infection, parasites, or poor nutrition. Instead, the pattern matched something unexpected: crested ducks, whose feathery crowns also result from a genetic defect that leaves open holes in the skull where a cushion of fat forms. The resemblance was "remarkable," according to the study, with the position and appearance of the defects being "identical." Once Groot spotted the connection, she was reminded of Dutch artist Melchior d'Hondecoeter's paintings, which depicted crested geese from roughly the same era. Both the paintings and these German geese appear to be the earliest known cases of crested geese in Europe.
Yet this vanity came at a cost. In crested ducks, the genetic defect causing the crest leads to high mortality rates before and after hatching, poor coordination, and sometimes loss of sight and hearing in adults. No comparable studies exist for crested geese, but because ducks and geese are closely related, Groot believes they likely suffered similar issues. One goose in the study had a hole so large — 15 millimeters — that a portion of its skull was simply missing.
After death, these prestige birds met an undignified end: they were discarded alongside chicken and duck bones, relegated to the same fate as ordinary kitchen scraps. But their skulls endured, waiting four centuries to tell a story about what humans will do for beauty, and what animals pay for it.
Groot hopes this discovery will prompt other researchers to examine bird skulls more closely, noting they are fragile and easily overlooked. She also plans to dig deeper into the history of crested birds, seeking to understand how and why people have long bred animals for looks that sometimes cause suffering. It's a question as old as domestication itself — and one that these four unlikely relics are finally helping to answer.