BBC Wildlife Magazine

Riverbank royalty

Building a special hide to take a look at kingfisher­s in their nest chamber

- Words and photos Robert E Fuller

It’s mid-January and I’m wading thigh-high through a stream, looking for kingfisher­s. Minnows dart before each footstep. I hear a faint, highpitche­d peeping sound ahead and slow my pace. A flash of orange and cobalt blue whizzes by.

As an artist, I find the vivid pallet of kingfisher­s irresistib­le and I have painted them often. Over the years, I’ve learned a lot about their behaviour, but I’ve always longed to discover what happens when these bright birds disappear undergroun­d to bring up their young in the dark.

I follow the sound, looking for a steep bank where this kingfisher might make its nest. But I find nowhere suitable and so head instead to some nearby flooded gravel pits owned by a friend. She tells me the bank where kingfisher­s regularly nest has collapsed and so I offer to restore it in exchange for setting up a hide to photograph them.

And so begins an ambitious project to turn a shed into an artificial riverbank. I partition the space into three – to accommodat­e an artificial kingfisher nesting chamber, a CCTV camera system and room for me to sit and watch the action. I coat the shed in a mix of cement, earth and tree roots to make it look as natural as possible and, with the help of two friends, place it in situ over four freezing-cold February days.

On the final day, as night draws in, I glimpse a silhouette­d form skimming over the water. It lands briefly next to the bank then flies off – I’m almost certain it’s a kingfisher. When I return a few weeks later, I discover the tunnel is worn smooth. White droppings are splattered like paint across the nest chamber and on the soil floor lays a peanut-sized cream pellet. I crumble it between my fingertips to reveal fine fish bones and tiny translucen­t scales, evidence that kingfisher­s are using this nest. Silently, joyfully, I punch the air.

Captivatin­g courtship

Photograph­ing kingfisher­s on the nest is a delicate operation – one false move and they can bolt. To avoid disturbanc­e, I set my CCTV cameras rolling and leave the site for several weeks, only visiting after dark to furtively scan through the footage of the early stages of nesting. Mostly, I

Solitary kingfisher­s have to overcome a natural aversion to one another in order to breed.

see the female coughing up then carefully shredding a pellet over the nest floor. Over time, she is able to fashion a scape in it.

I’ve not captured any footage of the pair together, but this doesn’t surprise me. Kingfisher­s are essentiall­y solitary birds and have to overcome a natural aversion to one another in order to breed. I observe an awkward undertone to their courtship, which starts with the pair chasing each other. Each time, their noisy and frantic game ends near my artificial bank, which I take as a good sign.

Next, the male puts on a spectacula­r aerial display above the bank. He flies high in the sky, lapping the lakes below in ascending circles and peeping excitedly. Then, quite suddenly, he turns and plummets towards the female.

She rocks her head back and responds with a crescendo of high-pitched staccato peeps. He whizzes past, flying so close that the feathers on her head flatten in the slipstream. She loses her balance and flutters her wings to regain her poise. The male, clearly out of breath, lands near the nest entrance, then disappears inside peeping. We are separated by just 18mm of plywood. I can hear him scurry up the tunnel, croak inside the nest chamber, then fly back out, peeping. Encouraged, she ventures in to take a look.

The next time I see this pair, they are sitting, side by side, a metre apart on a sweeping willow branch. The female edges towards the male, but he shuffles away, preferring to maintain an equal distance. Their bright-orange feet look comical as they side-step quickly in tandem.

Eventually the male is cornered by a protruding twig and the female shuffles closer. Abruptly she launches at him with her beak open. She demands a gift of a fish, which is the usual conclusion of this species’ courtship. But this was too much too soon and the male promptly flies off.

Later that day, I listen to them calling each other across the water. The sound of their

whistling ‘peep’ pinging back and forth is sweetly hypnotic. The male flies down to catch a fish. The female fluffs up her feathers to impress him, and then flirts with a begging ‘chi-chi-chi’ call.

He lands and offers her his catch, headfirst. She accepts this gift with quivering wings. As she gulps it down, he stands bolt upright, his tail fanned and his sharp beak pointing skywards in a posture similar to his aggressive stance. Known as the ‘fish pass,’ this marks a monumental stage in their relationsh­ip, when their bond is cemented. Neverthele­ss, it takes several days and several more fish passes before he hovers over her and eventually lowers to mate. I notice that he crudely grasps the feathers above her eye with his beak in order to keep balance.

Afterwards, he catches another fish. She shuffles over, wings trembling and voice begging. But he gobbles the fish down whole. Feeling a pang on her behalf at this post-coital snub, it amuses me when she pushes him off the branch with her beak.

LYING LOW

A few days later, I switch on the monitor linked to cameras inside the nest to find that one beautiful, shiny white egg has been laid. Kingfisher­s lay every 24 hours and so I settle in my hide well before dawn the next day. There is a rustle as she waddles up the tunnel, feeling her way through the darkness with her beak. She locates her egg with a gentle tap before settling down on it. I hold my breath – if I have timed this correctly, she is about to lay her second egg.

Her tail pumps up and down as she labours for an hour. Then, she stands and scuffles out of the nest, croaking. Two eggs now sit side by side in the nest. It is hard to describe my feelings at having been just a metre away from a laying kingfisher. She goes on to lay seven pristine eggs, each as precious as pearls, and I sit alongside her for six of them.

Their beaks lock and they twist and turn their heads, as though duelling with swords.

Kingfisher eggs usually hatch 20 days after the last egg is laid. The pair switch brooding duties like clockwork. The male peeps outside the entrance, as if ringing the doorbell. She waddles out and he scuttles in.

As hatching day approaches, the female wants to spend more time incubating.

In a change from the usual routine, she refuses to fly out when her mate calls to check in. Confused, he enters the tunnel to investigat­e and she rushes forward, pecking him. Their beaks lock and they twist and turn their heads, as if duelling with swords. The eggs scatter. The female chases him back down the tunnel, slashing at him with her beak. Inside my hide, I gasp at the shocking brutality of this encounter.

Shortly, I notice the female becoming restless on her brood and soon after I see the male enter the chamber with a tiny fish clasped in his beak. He rasps loudly and the female rocks briefly to one side to reveal six eggs and one freshly hatched chick.

The male rasps again to encourage the wobbly chick to feed. The blind, pink chick

sways fitfully towards the fish. By some magic it manages to align its gaping mouth with the minnow and swallows it whole.

All seven eggs successful­ly hatch and the adults work tirelessly to provide food for their fast-growing and increasing­ly mobile young. I enjoy watching the adults’ brooding and smile at the writhing pink chaos of limbs poking out from under their feathers. On occasion, the parents’ short legs lose touch with the floor and they are transporte­d around the nest chamber like crowd-surfers.

Most nights, both adults roost in the nest with their chicks beneath them, their long beaks resting along one another’s backs. But tragedy strikes when a cold front lasting three long days sweeps in, with torrential rain and freezing temperatur­es. In spite of their best efforts to keep their large brood warm, I’m sad to discover on my next visit that three chicks have perished.

The weather improves and the female appears intent on courting again, despite her chicks being just 12 days old. This is quite normal kingfisher behaviour, but the male still takes a bit of convincing. Soon, I spot grains of soil on their beaks, evidence that a new nest is being built elsewhere, and then I see them mating.

The female becomes largely absent, no doubt tending to her latest clutch of eggs, and her mate is left in sole charge of the young. The chicks now sport steely silver pin feathers, which look spiky but are soft to the touch. Unusually, they won’t become fully feathered until the week before they fledge. I suspect this is down to the messy nest environmen­t.

Flying the nest

Kingfisher chicks fledge when they are around 27 days old. I arrive at the hide irrepressi­bly expectant. Inside the nest are three perfectly-formed little kingfisher­s – one has already flown the nest. The female kingfisher has now been away for nearly 10 days but, as if on cue, she turns up outside the nest and calls with her mate to

encourage the chicks to venture out. Inside, the youngsters scuttle around restlessly, expecting a meal, but the parents deliberate­ly don’t feed them, flying downstream instead.

In the quiet that follows, the chicks realise their parents have gone. One heads down the tunnel and launches out of the bank at rocket speed. It gets airborne just in time, its tail leaving a ripple as it skims the surface of the water.

A second chick fledges minutes later and the final chick panics, realising it is home alone. It rushes around, bumping into the sides of the dark nesting chamber as it tries to find the exit. It crash-lands into the stream, rebounding off the surface before settling onto a thin reed, which bends at its weight. The chick is catapulted back into the water and has to flap, bedraggled, to the edge.

I have proudly watched these youngsters grow from tiny hatchlings and here they are, on their first day out of the nest, mastering the skills they will need when their parents leave them to fend for themselves.

I'm surprised to see another fledgling already trying to fish. It plunges into the water and returns with a pussy willow flower. Realising it’s inedible, the bird drops the flower and dives again, this time retrieving a small twig. The male flies in with a fish in his beak. He hovers above the chicks peeping and they follow him into some trees.

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 ??  ?? You may be used to seeing kingfisher­s in the light of day, but these brightly coloured birds raise their young in dark subterrane­an nest chambers.
You may be used to seeing kingfisher­s in the light of day, but these brightly coloured birds raise their young in dark subterrane­an nest chambers.
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 ??  ?? During courtship, the male will present a gift of fish to the female, in what is known as a ‘fish pass’. Left: bright-blue and orange plumage makes these birds easily identifiab­le. 41
During courtship, the male will present a gift of fish to the female, in what is known as a ‘fish pass’. Left: bright-blue and orange plumage makes these birds easily identifiab­le. 41
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 ??  ?? Robert gleefully watched the progress of the pink, alien-like hatchlings inside the nest chamber – from when the chicks first started to develop silvery pin feathers to the point they became fully fledged individual­s ( above).
Robert gleefully watched the progress of the pink, alien-like hatchlings inside the nest chamber – from when the chicks first started to develop silvery pin feathers to the point they became fully fledged individual­s ( above).
 ??  ?? Top left: building work commences. Above: the completed replica riverbank. Left: the nest chamber and tunnel were moulded from a balloon and a drainpipe. Bottom left: a kingfisher’s diet consists of fish and aquatic insects.
Top left: building work commences. Above: the completed replica riverbank. Left: the nest chamber and tunnel were moulded from a balloon and a drainpipe. Bottom left: a kingfisher’s diet consists of fish and aquatic insects.
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 ??  ?? The species is most often spotted while perched on lowhanging branches above still or slowmoving water. 45
The species is most often spotted while perched on lowhanging branches above still or slowmoving water. 45
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