A day out at the pool with the kids

During most of spring we woke up every morning to the sound of sparrowhawks shagging.  But for the last couple of months the alarm clock has been the crack of a whip.

An eastern whipbird pair have been whiling away time in our garden, offering their distinctive antiphonal duet – the male first with his whipcrack, followed up by his mate with a “chu chu”.  But they’ve had an extra with them this year – a youngster, with a kind of squelchy call that reminds me a bit of the red-crowned toadlets that I’ve been hearing on the fire trails throughout this soggy soggy summer.

Recently fledged juvenile whipbird

The whipbirds have some interesting child-rearing habits, according to researchers Amy Rogers and Raoul Mulder.  They usually lay a couple of eggs.  Once the chicks fledge, the parents divide the task of looking after the kids quite formally between them.  Each parent looks after one of the fledglings exclusively.  You can imagine the therapy bills .  There’s an exception – if only one chick survives, then it’s mum who’s in charge.  So I guess it’s maternal care we’ve seen as we’ve watched the adult and juvenile slipping in and out of sight around the garden.  There’s definitely a whip-cracking male around, but all thee have only been spotted together in the garden once – and I wasn’t there with my camera to catch it, so I question if it ever really happened.

Whipbird chicks spend about six weeks with their parents after fledging, sometimes even hanging around until the next season, and it’s been interesting watching the adult and its offspring interacting, as the young one slowly morphs from its slighty fluffy, brown “I just came out of the nest” look to something more like an adult appearance.

Adult whipbird with a juvenile following it

I think one reason the whipbirds make such regular appearances in our yard is the frightful mess it’s in.  We’re not path sweepers or lawn groomers.  More stick-pilers, fungus-harbourers and ignorers-of-organic-detritus.  My efforts to promote biodiversity are not solely confined to a failure to rake, however.  I’ve sunk the value of at least one of the kids’ kidneys into shrubs, vines and groundcovers, some of which have survived.  While I have regularly seen the whipbirds in our kiwifruit arbor and the youngster has been spotted leaping about in a demented way amongst the ferns and vines outside our kitchen window, the native violets, which are threatening to overrun the house during this wettest summer in 30 years, seem to be a favoured spot.

Here we see chick watching mum head down bum up in the viola hederacea (you can just see the tail in the lower half of the first picture).  Next it’s little one that has its butt in the air, retrieving something invisible but presumably tasty.

Juvenile whipbird watching adult hunting for food

 

Despite their furtive habits and preference for the undergrowth, it turns out whipbirds can be pretty assertive under the right circumstances.  I was impressed by the use of eye contact in a  show-down with one of our many resident brush turkeys over a bird bath.

Eastern whipbird and brush turkey eye to eye

Showdown at the bird bath

The best time to spot two generations of whipbirds is around lunchtime, at the birdbath.  Mum arrives first, has a wash and then a bit of a groom, perched above on some wonga wonga vines.

Whipbird mum having a wash

Having a splash

If the coast is clear, the youngster appears.

Juvenile whipbird perched on a bird bath

Juvenile whipbird taking its turn in the birdbath

Juvenile whipbird and mum nose to nose 2 crop amended small

Juvenile whipbird and mum beak to beak

Awwwwww.

Having watched this scene of filial affection unfolding around the birdbath at home, I was quite delighted to catch what I thought were some similarly touching moments at a pool in a more natural setting.

Brown thornbill in a banksia serrata

Brown thornbill in a banksia serrata

Eastern yellow robin

Spinebill feeding from a banksia serrata

Grey fantail - perhaps a young 'un with a bit of brown on the breast

Grey fantail – perhaps a young ‘un with a bit of brown on the breast

Lewin’s honeyeater in a banksia serrata

Juvenile spinebill hanging

As a devoted parent, I’m always happy to drive my kids to music lessons… especially if the music teacher’s home happens to be right next to a national park.  On a sunny late afternoon during one of these high-speed twitching sessions, I spotted some action high up in a Sydney red gum.

A hollow on top of a horizonal branch seemed to have formed a natural pool which was evidently a magnet for the local birdlife.

Two juvenile spinebills near the natural pool in the angophora tree

Two juvenile spinebills near the natural pool in the angophora tree

Juvenile spinebills playing, fighting or perhaps play fighting

Juvenile spinebills playing, fighting or perhaps play fighting

I could see that there were some juvenile spinebills about, and some adults too.  Squinting through my lens I wasn’t quite sure what kind of pool side action was going on up there in the canopy.  Perhaps adults giving a tour to youngsters of all the best places to drink and bathe in their forest home? Showing them the ropes in this lofty aquatic environment – explaining the avian equivalent to those “no petting” “no bombing” rules perhaps?

When I got home and had a good look at the photos I found out otherwise.

Adult whipbird shirtfronting a juvenile by the angophora pool

Adult whipbird shirtfronting a juvenile by the angophora pool

Adult spinebill after a celebratory bathe

Adult spinebill after a celebratory bathe in the treetop pool

These poolside antics give “competitive dad” a whole new meaning.

Apparently, spinebills can have up to 5 clutches of eggs each year – almost as soon as one clutch are fledged, the parents start making a new nest ready, driving the older juveniles away.  And no free pass for the pool it seems!

Much as I love the gorgeous spinebills, for human Sydneysiders with our eyewatering real estate market and clutches of offspring near at hand, somehow the parenting style of the whipbirds feels closer to home.

Adult male eastern spinebill in a hibiscus tree

Adult male eastern spinebill in a hibiscus tree

More birds in our backyard

Cracking the whip in a messy yard

Blood feud in the dawn redwood

Death and sibling rivalry

Growing up is hard to swallow

Blue eyes and biteys

 

References

K. A. Wood (1996) “Bird Assemblages in a Small Public Reserve and Adjacent Residential Area at Wollongong, New South Wales Wildlife Research, 23, 605-20

Amy Rogers and Raoul Mulder (1996) “Breeding ecology and social behaviour of an antiphonal duetter, the eastern whipbird” Wildlife Research, 1996,23, 605-20

Growing up is hard to swallow

It’s all about the young koels in our yard at the moment.  We have at least two of them hanging around the back yard, begging for food and slowly destroying the mental health of their red wattlebird adoptive parents.  Well, I hope for their sake there are more than one set of parents doing the provisioning.

While I’m still hearing koels begging endlessly, I have a suspicion that the parents are trying to  back off from supplying food. As a parent of teenagers I can certainly empathise.  Wattlebirds normally feed fledgelings for two or three weeks after leaving the nest.  The soundscape of our yard started to be dominated by the pleas of the koel youngsters around mid-January, so I think the parents’ patience is starting to wear pretty thin. I’m pretty sure that the koels are trying to push that envelope though.

I watched this rather grown-up looking chick sitting on a branch to beg relentlessly for at least half an hour without attention.  It whined and shuffled, whined and groomed.

It seemed to despair of getting any attention at one point and started rummaging around for its own tucker.   Clearly this flaccid flower didn’t cut the mustard.

Eventually the relentless moaning did result in a couple of snacks.

While waiting …. and waiting, and waiting… (I was almost as impatient as the koel for this fledgeling to get a feed…) I spotted a second youngster lurking nearby.  It looked a bit skinnier and its plumage a bit patchier and at first I wondered if it was a younger chick, hogging the attention of the exhausted parents.  But usually female koels only lays a single egg in a nest – which make sense since the chick heaves competitor eggs and hatchlings out.  Sometimes, it seems, koel females will return to lay an egg in a sequence of different nests so perhaps this second youngster was being fed by a different harried parent.  I feel kind of relieved on their behalf.

One way or another, all that whining seems to be getting less of a response this weather.  So our backyard koel chicks are having to forage for their own food. This nugget looks kind of unappealing, though perhaps no worse than the spider that I saw mum or dad retrieving a couple of weeks ago.

Our neighbour’s bangalow palm seems to be a favourite foraging ground.

Perhaps the temptations of the palms are a bit too great.  Last week, I watched a youngster beg from a branch near our back verandah for a while.  No parental attention was forthcoming, and I thought it had given up, as it went surprisingly silent for quite some time, hunching and looking pensive.  Then this happened:

I think this mysterious fruit must have been stashed in the bird’s crop, .  Certainly this same koel was stacking away the berries at an extraordinary rate on its visit to the bangalow palm, so the idea that it was tucking it away for a later snack seems pretty plausible.  Having read a bit about the way birds use crops – a muscular pouch in the oesophagus that stores food – I am now tremendously jealous.  What a terrific idea!  Why the hell don’t humans have one?  I suppose blokes can use beards, although that’s a visually disturbing alternative.

Koels – noisy, whiny parasites – get a bit of a bad rap around here, but I can’t help admire them – their chutzpah, their gorgeous feathers, and their admirable capacity to never, it seems, go hungry.

 

The trouble with the younger generation

It’s not often that the stars are in alignment for a midweek paddle but occasionally it happens.  Children elsewhere, being forced to make music for 48 straight hours; the car (or “kayak transportation device” as I prefer to call it) sitting there unused and no pressing work engagements before 9 am on a Wednesday morning.

Berowra Creek was delightfully quiet, save for a handful of tinnies bearing estuarine commuters towards the wharf and the road to the big smoke roundabout 7 o’clock.  I guess that’s rush hour on the Hawkesbury.

Ferry lights closer crop

Pre-dawn rush at the Berowra Creek ferry

A peaceful river, low tide… time for the shy critters to come out of the mangroves and feast in the mud.

Juvenile Striated heron hunting silhouette with catch brightened

Juvenile striated heron with a tiny fish

I go past the mouth of Joe Crafts Bay quite regularly.  It’s a magical place, blessed with reflections and rolling fog, and a secret creek filled with darting fish.

Towards Joe Craft bay

Looking to Joe Crafts Bay on a misty day

I’m always expecting to see something exotic there, like the critically endangered Eastern Curlew, visiting Australian coast during the northern winter after an epic migration from Russia and western China.   Mostly I see bird-shaped sticks.  But on this quiet morning, what I initially suspected to be a stick turned out not one, but two striated herons.

Juvenile striated heron profile in water 2 amended darkened

Juvenile striated heron pretending no one is looking

It’s pretty unusual to get a good look at these birds, described on one twitcher website, unnecessarily cruelly I think, as “a dumpy little heron with a large head“. Or if you were really mean you might describe it as a dumpy little heron with a jack-in-the-box neck.

Juvenile striated heron alarmed lightened 2 amended square

Juvenile striated heron with neck stretch

I normally spot striated herons only after I’ve already bugged them enough to burst out of their hiding places in the mangroves and fly off, disgruntled, down the river.

Striated heron stretching

Adult striated heron perching at high tide

They are not given to making a lot of noise and hunt stealthily, perched on a low branch over shallow water or creeping along the shoreline looking for little fish, crabs or crustaceans.  Interestingly, they sometimes also fish with bait – dropping a feather or leaf on the water to lure fish to the surface to investigate.  These birds seem to be quite smart  – researchers have even recorded youngsters playing with bugs, fruit and pieces of wood – perhaps practicing for bait fishing.

But for all their creativity, young herons like most juvenile birds, seem to be a little bit slow on the uptake when they unexpectedly encounter a mammal in a boat.  And long may that stupidity continue.

Juvenile striated heron from behind square and lightened

Pensive looking juvenile striated heron

There was also an adult bird on this particular mudflat, clever enough to stay a lot further away.

adult striated profile crop

Adult striated heron, macroryncha subspecies

And while the adult wasn’t incredibly impressed with me being in its territory, it was really very pissed off that it was having to share its patch of low tide real estate with a young heron.  According to the International Union for Conservation of Nature’s Heron Conservation group – an impressively specialised body – African striated herons are so determined to defend their territory that you only find a couple of individuals in a 13 kilometre stretch of river.  Our aggro Aussie adult, true to form, went after the youngster no less than three times while I was watching, chasing it off the prime spots on the mudflat with real venom.

Adult straited chasing juvenile crop long

Adult striated heron chasing off a juvenile off his feeding grounds

Not so the adult could hunt.  Oh no. Youngster was finding fine pickings.  But having cleared him out, the adult heron did this:

Nada.  Played a game of statues. Or maybe pretended to be a stick for the benefit of nosy kayakers. It’s always pleasing to see birds behaving as expected.  Here we see an “adult… freez[ing] when disturbed; standing motionless with their bill… at 45 degrees

I was surprised to find that the striated heron, shy and retiring as it is, has been described as “one of the more cosmopolitan herons“, which suggests somehow it has well-used hand luggage tucked away in the mangroves somewhere and frequent flyer points.  Sub-species (in an attractive range of colours) are found right around the world – from Africa, Madagascar, the islands of the Indian Ocean, East Asia, and South America.

Adult Striated heron walking toe out good pattern

Adult striated heron stepping out

Australian striated herons – both the east coast macroryncha, grey with perhaps a flush of wine colour on its underparts, and the reddish-brown stagnatilis which living in the north west – are a bit fussier than many overseas subspecies, living pretty much exclusively in coastal areas in and around mangroves. That’s quite different to the rarer but to my untutored eye somewhat similar looking black bittern that is found along forested rivers, like the Wyong River where I spotted this one, and even rivers much further inland.

If you’re kind of fussy about where you live, Joe Crafts Bay seems a tremendous place to end up.  No wonder the grumpy grownup wants to keep it to himself.

Magic Joe Craft Bay

Joe Crafts Bay at its magical best

 

More adventures on the Hawkesbury

A visit with the eagles of Mooney Mooney Creek

Magic scenes on a cold and foggy day on Cowan Water

The silver river – up Marramarra Creek

Of gods and map readers – into Muogamarra National Park

Two sad islands, three whistling kites – a visit to Barr Island

Burnoff at Bujwa Bay

Alhambra on the Hawkesbury

 

 

 

The sacred comes to the neighbourhood

kingfisher in pine tree 2 long bright

I was just nipping back from depositing a small part of our egg mountain with our friends across the road last week, when something odd flew across the drive – something I’d never seen at our place before.  It turned out to be this guy – a sacred kingfisher.

I don’t know why I was so surprised to see a kingfisher here, a kilometre or more and a couple of hundred metres up the hill from the creek.  Possibly because I do regularly see these lovely birds on my paddles in the Hawkesbury – hunting in the mangroves lining Milson’s Point; regurgitating pellets in full view of the expensive holiday homes in Calabash Bay or this young ‘un, hanging out near the public wharf at the questionably named Dusty Hole.

Juvenile kingfisher head cocked

Juvenile sacred kingfisher by Berowra Creek

Though I have repeatedly spotted them in bushland far from decent stretches of water, I managed to convince myself that they were fishing in the local tiny, slightly fetid pools.  But of course, ten minutes of googling gave me the correct answer.  Unlike the smaller azure kingfishers – the sacred mostly eat terrestrial prey – insects, skinks and even sometimes small birds. They rarely actually eat fish: there should be some kind of by-law, right?

Azure kingfisher amended crop

Azure kingfisher chilling out in the winter fog

Our visitor hung out for quite a while in the neighbours’ backyard, giving me the chance to race off for my camera and get into a possibly compromising position with my zoom lens propped up on the fence, pointing in the general direction of their living room windows.  The kingfisher was certainly aware a stalker was watching him from the bushes but didn’t seem too fazed.

Kingfisher looking at me close 2 crop square amended

“What are you looking at? Stalker!”

After my efforts to create bird habitat over the last few years, I felt a bit jealous that this gorgeous creature was choosing to hang out in our neighbour’s back garden.  However, I have to reconcile myself that their densely-planted native garden has the low shrubs these birds like to perch on while they’re waiting to dive down onto their prey in the leaf litter, without the loud woodwork projects, inquisitive chickens, trampoline and horde of neighbourhood kids that ramp up the action in ours.

Kingfisher wings out long amended

A wing stretch from our visiting sacred kingfisher

Sacred kingfishers are surprisingly mobile it seems.  They are the only kingfisher in these parts that is migratory.  Many (though not all) of the birds that live in the southern parts of Australia migrate each each to north Queensland and PNG – it’s a partial migrant like most other Australian migratory birds. I suspect that the local sacred kingfishers – or at least some of them – hang around in the winter.  Peter and Judy Smith (2012), keeping tabs on the arrival dates of migratory birds in Blaxland in the lower Blue Mountains, for over 30 years never saw a sacred kingfisher in the winter, but I’ve seen a couple on the Hawkesbury in the colder months – hanging out in America Bay in April and basking in the late afternoon light by Berowra Creek in July, right in the middle of winter.  Or “winter” as my British friends like to call it.

When I visited Wellington a couple of years ago I was surprised to see something very familiar hunting in a suburban park. A sub-species, Todiramphus sanctus vagans, that looks very very like our locals lives in New Zealand/Aotearoa as well.

NZ Kingfisher lit profile sharp bigger crop better

The New Zealand kingfisher

I started speculating on how the sacred kingfishers got over the Tasman but it seem their range is less about being blown off course on migratory treks than the epic distribution of another bird to which it is closely related – the collared kingfisher .  It’s a one less frequently seen in Australia – found only on coastlines in the northern half of Australia – and never seen at all by me so no pics. I got nothing!  Collared kingfishers (sometimes called the mangrove kingfisher) seem to be less generalist than the sacred, favouring mangroves and the forests immediately behind them – but has an impressive range.

In an article offering a genetic analysis of this species and its descendants in Australia, New Zealand and various Pacific islands, Michael Andersen and his colleagues describe as it as “the most widely distributed of the Pacific’s ‘great speciators’. Its 50 subspecies constitute a species complex that is distributed over 16 000 km from the Red Sea to Polynesia” (Andersen 2015).  The sacred seems to be one of the species that evolved from it.  Intriguingly collared kingfishers are no longer a migratory species, but Andersen speculates that “the migratory nature of T. sanctus is an evolutionary vestige of the ancestral Todiramphus lineage still exhibiting the colonization phase” (Andersen 2015).

Kingfisher and branches 4 long

One way or another, I shouldn’t have been surprised to find the sacred in our neighbourhood.  After all, I’ve always known you can witness sacred on the water, or in the forest, or in the suburbs.  Not everywhere, but in more places than you would think – as long as you remember to look.  In this case – in the bushes.

Further References

Andersen, Michael, Hannah T Shult, Alice Cibois, Jean-Claude Thibault, Christopher E Filardi, Robert G Moyle (2015) “Rapid diversification and secondary sympatry in Australo-Pacific kingfishers” Royal Society Open Science Feb 2(2)

Debus, SJS (2007) “Avifauna of remnant bushland on the Twee Coast of Northern New South Wales” Sunbird 37(2)

Lindenmayer, David B. , Michael A. McCarthy, Hugh P. Possingham and Sarah Legge (2001) “A Simple Landscape-Scale Test of a Spatially Explicit Population Model: Patch Occupancy in Fragmented South-Eastern Australian Forests” Oikos, Vol. 92, No. 3 (Mar), pp. 445-458

Loyn, Richard H., Edward G. McNabb, Phoebe Macak, Philippa Noble (2007) “Eucalypt plantations as habitat for birds on previously cleared farmland in south-eastern Australia” Biological Conservation 137 533–548

Smith, Peter & Judy Smith (2012) “Climate change and bird migration in southeastern
Australia” Emu – Austral Ornithology, 112:4, 333-342

Kingfisher light against pine background square