Monday, 10 November 2014

OWLS: SILENT ON THE WING

They move through the night as if stitched into it, seamless and soundless. You don’t hear an owl arrive. 

You feel it—the brief shift in the air above your head, a whisper of movement. It always feels me with a sense of awe. 

The silence is part of the hunt. Each feather, soft-edged and velvet-fringed, pulls the air apart without letting it stitch back into a sound. It is the most refined stealth technology evolution ever produced.

Out of the dusk they come, low and spectral. A heart-shaped face turns like a satellite dish, searching, mapping the world not with sight but with sound—every rustle of vole or beetle sketched in invisible lines. 

In Kwak’wala, the language of the Kwakwaka’wakw peoples of northern Vancouver Island, both an owl and a carved owl mask are called, Da̱xda̱xa̱luła̱mł, (though I have also heard them called Gwax̱w̱a̱lawadi, names that carries deep layers of meaning within their sounds. 

Among the Kwagu’ł (Kwaguith) and cousin Kwakwaka’wakw (those who speak Kwak'wala), the owl is often regarded as a messenger between worlds—a being that moves freely between the realm of the living and the spirit world. 

Its nocturnal calls are heard as sounds of the forest but also messages from ancestors, guiding, cautioning, or reminding listeners of their connection to those who came before. 

The owl’s ability to see in darkness and to travel silently through the night makes it a symbol of perception, transformation, and spiritual awareness, woven into the ceremonial stories and teachings that link human life to the greater cycles of nature and the unseen.

The Barn Owl, Tyto alba, pale as old linen and light as breath, drifts over stubble fields and meadows on a night wind. Its back is mottled with gold and grey, a shimmer of faded ochre dusted with starlight, while its underparts are moon-pale, unmarked. To see one cross a field in darkness is to glimpse a ghost that has learned to eat.

Barn Owls wear the night differently from their kin. Where they are gold and ivory, the Great Grey Owl, Strix nebulosa, is a storm of silver mist and charcoal, all rings and ripples of smoke. The Snowy Owl, Bubo scandiacus, gleams white as an Arctic sunbeam, each feather edged in ink like frost-shadow on snow. 

The Tawny Owl, Strix aluco, one of my favourite woodland companions, takes the colour of leaf litter and bark, warm brown and russet, perfectly disguised against a tree trunk’s skin. 

The diversity of owl plumage tells the story of their worlds—the open field, the frozen tundra, the dense woodland—and of their mastery of concealment. Every pattern is a negotiation with light and habitat, a balance between being unseen and seeing everything.

The eyes, of course, are what we remember. They are not round but tubes, locked in place by bone, forcing the head to turn instead. Two great wells of amber, gold, or black glass, evolved to harvest every drop of night. Behind them, the facial disc funnels sound to asymmetrical ears—one higher than the other, tuned to triangulate the faintest scurry in the dark. 

An owl hears in three dimensions; it knows precisely not just where a mouse is, but how far beneath the snow or under the leaf mould it crouches. 

The result is a predator with seemingly supernatural powers. The flight is the confirmation.

Yet for all their modern perfection, owls are ancient creatures. Their lineage stretches far back into the Oligocene and beyond. 

The earliest fossils we can confidently call owls—members of the order Strigiformes—appear around 60 million years ago, just after the age of dinosaurs gave way to the age of mammals. 

One of the oldest known is Ogygoptynx wetmorei, found in the Paleocene deposits of Colorado, a time when tropical forests spread across what is now the Rocky Mountain region. 

Slightly later, in the early Eocene, we meet Berruornis from France and Primoptynx from Wyoming—owls large and powerful, already showing the curved talons and forward-facing eyes that mark their descendants.

The fossil record reveals that the ancestors of modern owls were even larger and, in some cases, more diurnal than today’s secretive forms. 

The Miocene produced giants like Ornimegalonyx oteroi of Cuba—standing nearly a metre tall, possibly flightless, stalking prey through forest shadows. Europe once hosted Strix intermedia, and North America its share of extinct Tyto species, some with wingspans rivaling modern eagles. 

By the Pleistocene, many of the owl forms we know today had already arrived: Snowy Owls gliding over Ice Age steppes, Barn Owls haunting caves where mammoth bones lay.

Those caves, in fact, preserve some of our best records of owl life. Owls, being generous regurgitators, leave behind pellets—compressed bundles of fur and bone that fossilize beautifully in dry shelters. 

Through these, we reconstruct vanished ecosystems: field mice of species long extinct, voles that once roamed British lowlands before the sea cut us from the continent. Each pellet is a time capsule, the residue of a meal but also of a habitat. These little truth revealing pellets are a delight to find (don't be squeamish!) and pull apart as they tell us as much today as they do from the past. 

There’s something wonderfully contradictory about owls in prehistory: creatures so adapted to darkness, yet so enduring in stone. The silent of their wings does not fossilize, but echoes persist in bone and pellet and in the gouge marks of their claws on ancient prey. 

In the fossil layers of Rancho La Brea in California, the tar pits have trapped the remains of owls that hunted across the Late Pleistocene grasslands—Barn Owls and Great Horned Owls (Bubo virginianus) caught in the sticky legacy of bitumen. 

In Europe, the famous Messel Pit of Germany has yielded exquisite Eocene specimens, complete with impressions of feathers and talons—evidence that the essential owl form has changed little in 50 million years. Once you are perfect, evolution tends to leave you alone.

Their success lies in specialisation: asymmetrical hearing, silent flight, low metabolic rate, unmatched night vision. Yet their story is also one of vulnerability. The very silence that serves them in the wild renders them invisible to us until they are gone. Barn Owl numbers have fallen in much of Europe as hedgerows vanish and grasslands are ploughed. 

In contrast, urban owls like the adaptable Great Horned Owl have expanded their ranges, turning city parks into hunting grounds. Some species are reclaiming ancient territories; others fade into absence, leaving only their echoes and fossils behind. Where I live on Vancouver Island, I can hear their call in the night and early morning as they send out their plaintive calls for a mate.

So much of what makes an owl remarkable—the hush of its wings, the glimmer of its eyes, the shape of its face—seems almost designed for myth. We have read them as omens, messengers, symbols of wisdom or death. But the truth, as the fossil record reminds us, is simpler and deeper. 

Owls are survivors, engineers of silence that have watched the world change for sixty million years. When one glides over a moonlit field, I stand in humility watching its perfect design and adaptation to this world and its connection to realms I can only dream of.