Medieval Lore: The Curious Myth of the Origin Barnacle Geese

Ray Oaks, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Myth

Barnacle geese are a migratory species of water bird that have a very weird myth of origin attached to them that was once widely believedDuring the medieval period there was a belief that barnacle geese were not hatched from eggs but actually grew on trees or spontaneously on pieces of driftwood that floated in the sea.  This strange myth was widespread at the time and believed by  many eminent people of the day.   In this work we will look briefly at the barnacle followed by a look at barnacle geese both of which are real creatures.  This will be followed by discussing some of these strange ideas before concluding with our views on them today.

Migration

During the months of October through to March, parts of the British Isles and certain parts of Europe played host to flocks of barnacle geese.  This puzzled medieval people as they seemed to arrive out of nowhere and leave in the same manner.  No one had seen their nests, or  their eggs, or their young and no one knew how, or where, they bred giving rise to speculation about their origin.  

Real Barnacles

A strange theory evolved that they actually grew from crustaceans called gooseneck barnacles (Lepas anatifera) that were found on pieces of driftwood around the sea shores.  Many people thought that a tuft of brown cirri that protruded from the capitulum of the crustacean looked very similar to the down found on unhatched goslings of other species. This similarity is not obvious to many other people but the barnacles were seen as the result of spontaneous generation from the driftwood which will be briefly discussed later.

Real Barnacle Geese

We know today that real barnacle goose (Branta leucopsis)  live and breed mainly on the three islands of Greenland, Svalbard and Novaya Zemlya in the oceans of the far north during the summer months.  After a long flight they would suddenly appear at British,  Irish and other European sites as fully grown adult geese.  People were puzzled because they had seen no signs of a nest, eggs or even goslings but still they would appear at certain times of the year with unerring regularity.   To solve this puzzle some very peculiar answers evolved. 

The Barnacle Goose Tree

One such answer was the barnacle goose tree.  According to this myth young barnacle goslings grew on branches of a tree that overhung water in a similar way to nuts, fruit or berries sometimes do.  On becoming ripe, or big enough they drop from the branch safely into the water and are able to swim and float immediately eventually growing to maturity.  Those that missed the water and fell on to the ground died.

Sir John Mandeville

In the 14th century the traveller and writer Sir John Mandeville wrote in The Travels of Sir John Mandeville, his travel journal,

“I told them of as great a marvel to them, that is amongst us, and that was of the Bernakes, (barnacle geese). For I told them that in our country were trees that bear a fruit that become birds flying, and those that fell in the water live, and they that fall on the earth die anon, and they be right good to man’s meat. And hereof had they as great marvel, that some of them trowed it were an impossible thing to be. (1)

This and similar strange answers  to the origin of the barnacle goose was widely accepted especially among the clergy of the day.  

Gerald of Wales

Another myth of origin of the barnacle goose tells how it was born from driftwood from the sea.  Gerald of Wales,  also known as, Bishop Giraldus Cambrensis, was  12th century Welsh bishop who published a book, Topographia Hiberniae  after the invasion of parts of Ireland by King John where he mentioned how Irish clergy ate the barnacle goose on fast days which surprised him, 

“Nature produces [Bernacae] against Nature in the most extraordinary way. They are like marsh geese but somewhat smaller. They are produced from fir timber tossed along the sea, and are at first like gum. Afterwards they hang down by their beaks as if they were a seaweed attached to the timber, and are surrounded by shells in order to grow more freely. Having thus in process of time been clothed with a strong coat of feathers, they either fall into the water or fly freely away into the air. They derived their food and growth from the sap of the wood or from the sea, by a secret and most wonderful process of alimentation. I have frequently seen, with my own eyes, more than a thousand of these small bodies of birds, hanging down on the sea-shore from one piece of timber, enclosed in their shells, and already formed. They do not breed and lay eggs like other birds, nor do they ever hatch any eggs, nor do they seem to build nests in any corner of the earth “ (2) 

His observation, although erroneous, gave the myth credence and it spread across Europe.   However he took a dim view of the clergy eating them on fasting days saying, 

“…Bishops and religious men (viri religiosi) in some parts of Ireland do not scruple to dine off these birds at the time of fasting, because they are not flesh nor born of flesh … But in so doing they are led into sin. For if anyone were to eat of the leg of our first parent (Adam) although he was not born of flesh, that person could not be adjudged innocent of eating meat.” (3)

Sir E. Ray Lankester  

In 1915, Sir E. Ray Lankester, a British zoologist in his book, “Diversions of a Naturalist,” speculated on why this myth may have been popular with medieval clergy especially in Britain and France.   He picked up on the practice of the clergy eating them on fasting days for the popularity of the myth among them.  To make it an acceptable fasting meal they declared the barnacle goose to be more fish than a fowl and as such acceptable to be consumed on fasting days. 

Pope Innocent III was concerned enough about this practice to prohibit the eating of Geese during Lent at the Fourth Council of the Lateran in 1215.  Nevertheless he still seemed to accept the myth of their reproduction but pointed out that they lived and fed in a similar way to ducks and concluded that their nature was the same as other birds.

A Shift in Thinking

The bizarre myth of the reproduction of barnacle geese looks a typical example of superstition, ignorance and imagination run wild, but is it?  In the Middle Ages the Church drew moral lessons from nature but a shift in thinking appeared that saw nature as being worthy of studying in its own right.  This is where the myth of the origin of the barnacle goose comes in.

Spontaneous Generation 

A theological idea became  tangled  up in the debate of whether it was fowl or fish  which centered around the idea of spontaneous generation.  it was argued that gooseneck barnacles were spontaneously generated from the rotting driftwood. There was a common belief going right back to Aristotle that if the right conditions were present then the spontaneous generation of living organisms could and did occur arising from inorganic or nonliving material.   Despite the remarkable nature of the supposed origin of these lifeforms they had an ordinary lifestyle of sorts and manifest in a predictable way without divine intervention.  It was the assumption that they lacked parents which led to all sorts of theological arguments among Christians about Immaculate Conception and the Virgin Birth (which are not the same as each other) and cannot be fully dealt with here.

Frederick II of Hohenstaufen

Frederick II of Hohenstaufen, holy Roman Emperor and King of Sicily and Jerusalem about 200 years after Gerald of Wales was rather more doubting in his assessment of the spontaneous generation of the barnacle goose.  He wrote  saying, 

“There is also a small species known as the barnacle goose, arrayed in motley plumage …, of whose nesting haunts we have no certain knowledge. There is, however, a curious popular tradition that they spring from dead trees. It is said that in the far north old ships are to be found in whose rotting hulls a worm is born that develops into the barnacle goose. This goose hangs from the dead wood by its beak until it is old and strong enough to fly. We have made prolonged research into the origin and truth of this legend and even sent special envoys to the North with orders to bring back specimens of those mythical timbers for our inspection. When we examined them we did observe shell-like formations clinging to the rotten wood, but these bore no resemblance to any avian body. We therefore doubt the truth of this legend in the absence of corroborating evidence. In our opinion this superstition arose from the fact that barnacle geese breed in such remote latitudes that men, in ignorance of their real nesting place, invented this explanation.” (4)

It had previously been thought that the Barnacle Goose migrated  to the British Isles via Scandinavia and the strange transformation occurred in the Norse countries.  He was at least right that they did breed in the remote regions of the north that were largely still unknown and not generated from rotting wood.

Morals from Nature

It has long been a practice for Christians to draw moral points from the natural world to reinforce theological ideas. This began in the 2nd century  with the Physiologus where nature was seen as the second book of God, until the early 17th century when natural history became better studied and understood.  However, as science progressed people became more skeptical about such ideas.

Albert the Great

Around the middle of the 14th century Albert the Great came up with a simple way of testing the spontaneous generation  theory by breeding them and noting that they did in fact lay eggs calling the myth, 

“altogether absurd as I and many of my friends have seen them pair and lay eggs and hatch chicks”. (5)

Despite this there were still those as late as the 16th century such as  Joseph Justus Scaliger who insisted that the spontaneous generation theory was right claiming to have witnessed it. 

Belief in the myth, either through self-interest and wanting to dine on meat on fast days, or ignorance, still lingered for a while.  Finally, science and reason prevailed and finally managed to explain how barnacle geese really reproduced.  It is very easy for us today to look back at certain erroneous absurd beliefs that were held to be true in the past but which were eventually proved false.   This itself highlights the frailty of human reason and we cannot help but wonder what people living in future time will make of some of our own beliefs we hold dear in our own times.  Let us hope they will not judge us too harshly.

© 25/03/2021 zteve t evans

References, Attributions and Further Reading

Copyright March 25th, 2021 zteve t evans

Tales of the Lost, the Drowned and the All-Seeing Eye – Vengeance Will Come!

Human Activity

There are many cases in recent times where towns and villages have been deliberately flooded by humans where a change in the landscape was required for purposes such as to form a reservoir for fresh water. These are usually well-documented and their history known though folklore and legends may evolve from them.

Legends

All around the world there are also legends of towns, cities and lands that have been destroyed or lost, leaving only rumor and myths of their existence and demise.  Many such places were rich and successful, well established and populous, making their loss all the more tragic and mystifying. These legends often tell of a catastrophic natural event such as a flood caused by high tides, storms or perhaps covered by sand or snow.  Sometimes it is some geological phenomenon such as an earthquake and sometimes this is combined with a natural event or act of war. The loss of such well-established and prosperous places left a deep impression on following generations.  Myths and legends evolved to explain the cataclysmic event and very often these were carefully crafted to provide a warning to following generations of the consequences of breaking God’s laws or their excessive pride or hubris.

Myth of Origin

These places were very often situated on a site that became transformed by a disastrous natural event in t a new feature of the landscape.  An inland town situated in a valley may be covered by a watery lake.   A town situated by the sea may be flooded and drowned by the waves or covered by sand becoming a massive dune.  A town in the mountains may be covered by snow and ice becoming a glacier. The story created to explain the disaster may be mostly fictional but based on some historic cataclysm like a powerful storm, earthquake or other natural disaster that actually happened.  Sometimes these myths and legends can help archaeologists and scientists investigate real disasters that happened long ago.  In some cases such disasters are well documented from the time but the legends and myths evolve after.

Cautionary Tales

These events when combined with the mysterious origin of some well known feature in the landscape create a compelling story that can have a profound and lingering effect on those it is told to.  Especially when the narrator is a local priest or who uses the story to impress upon their audience the consequences of offending the Almighty.  Although such myths and legends are often designed to uphold Christianity, other religions and philosophies have also used such techniques for this purpose. In some case it is pagan deities or spirits that have been angered in some way by rulers or citizens.  Although warnings may be given they are ignored invoking the wrath of the powerful divinity to wreak some form of divine retribution.

Divine Vengeance

Once divine retribution is invoked the fate of the town is sealed. Often it unfolds as a weather event such a rain, sand or snow storm.  Once divine retribution manifests the end is inevitable. All that will remain will be the myths and legends of a once rich and prosperous society that was drowned, buried or destroyed along with most of its population. Perhaps a lake or some other feature of the landscape appears where the town once stood.

From this a talented storyteller can weave a tale that will work quietly among following generations for centuries that impresses and extols the danger of angering the all powerful deity. In this way a naturally occurring catastrophic event such as a storm or earthquake may be transformed into something altogether more sinister and in many ways more dangerous. Very often it becomes the judgement of God that is dispensing retribution for wrongdoing on an immoral and corrupt society. This and similar themes are quite common in these legends. Warnings of impending retribution and vengeance are offered in an attempt to change people’s behaviour but are ignored. Punishment is inflicted often destroying that society in its entirety not just the perpetrators. Sometimes a few are saved but often the innocent perish along with the guilty.

Collective Guilt

There is a concept of collective guilt that runs through generations until some chosen time when punishment is enacted. Sometimes vengeance is suspended for several generations and the deviant behaviour forgotten by people.  Sometimes it becomes part of normal behaviour.  Nevertheless, the Almighty works at his own pace and punishment eventually arrives when least expected with devastating consequences. This does seem harsh on those who were not born when the original sin was committed but it seems there is an expectation to strive to recognize and put right the wrongs of the past. The message is that the sins of one, even when committed in the past, must not be tolerated either at the time, or perpetuated in the future. What is sown will eventually be reaped in a time and in a way that suits the Almighty. This obligation to right and discontinue past wrongs does not mean that they be wiped from history or that they should be.  It is important to keep records of such wrongs and our attempts to right them to monitor our own evolution and to make sure we do not make the same mistakes again.

The All-Seeing Eye

There is a sense that the individual and collective behaviour of people is being watched by some all-seeing eye.  It sees and knows all our deeds and looks into our hearts and minds making judgements upon us. Legends such as these warn that we are always being watched and judged and even our innermost thoughts are known to the Almighty.  They emphasize we must remember and obey the laws of God and will be held answerable for any transgressions at anytime in the present or future no matter how long ago the indiscretion.  Furthermore, we have a collective responsibility that runs through the past, present and future to keep ourselves and others in society on the straight and narrow. The message is the all-seeing eye sees everything and in a manner and time that suits the Almighty we will reap what we sow and then –

“Vengeance will come!”

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