Double Trouble

Black-collared Barbet (Lybius torquatus), Lesser Honeyguide (Indicator minor) and Scaly-thoated Honeyguide (Indicator variegatus). Turaco Wood, Nelspruit, October 2012.

In early September, a Golden-tailed Woodpecker began work on a nest hole in a dead snag of the tall Anthocleista grandiflora tree in our front garden. Great news, I thought, as I’d finally be able to follow the breeding cycle a woodpecker here at home. Within a few days, however, the woodpecker had been noticed by a family group of Black-collared Barbets and they soon forced it off, took over the site and finished the hole.

By late September, the barbets were in full residence and the alpha female is thought to have laid. These barbets are co-operative breeders, with two or three offspring from the previous clutch typically remaining with their parents to assist in raising the next brood. Quite why they have evolved this strategy was to become abundantly clear in the weeks ahead.

In early October, a Scaly-throated Honeyguide flew over my head to land in a small tree in our garden. It was reluctant to fly when I approached it and I thought that to be rather odd. But the next day, there was an outbreak of hissing, rasping and chattering at the barbet nest hole and  I saw what was presumably the same honeyguide (or its mate) being viciously set upon by the barbets.

Like cuckoos, honeygudes are brood-parasites, laying their own eggs in the nest of another bird and leaving them to raise the resultant ‘orphan’ as foster parents. For honeyguides, their hosts are barbets, bee-eaters, woodpeckers and other cavity nesters. So, the Scaly-throated Honeyguide was trying to lay in the nest of the barbets, but with one barbet in the nest and three others on patrol, it was no easy task. For the next couple of weeks, I became accustomed to the regular pursuits and angry vocalisations around the nest hole.

Then, at about 15h00 on 21 October, I was observing the nest hole when something very surprising happened. A Scaly-throated Honeyguide appeared and was immediately set upon and subjected to a tirade of abuse from the barbets. Its white outer tail feathers flashed past me as it dived for safety. The likely strategy is that the male honeyguide shows itself to the barbets, lets them come after it, and thus provides its mate with a chance to sneak in and drop an egg. But there was still one barbet (I suspect the alpha female) at the nest entrance. A second honeyguide did appear and this prompted the hole-bound barbet to go on attack. Now the hole was completely unguarded and – to my amazement – a Lesser Honeyguide appeared from nowhere, entered the hole and was out and gone before I could say “it’s laid an egg’! Seconds later, the barbet was back at the hole seemingly oblivious as what had just happened.

Had the smaller Lesser Honeyguide been watching the whole situation, waiting for such an opportunity, or had it -along with the Scaly-throateds – been harassing the barbets all along?  I’ll never know.

The next day, 22 October, brought high drama. I’m working away at my desk, with the front windows wide open to keep the studio ventilated. I hear the usual wild screeching outside (barbet chasing honeyguide) when a little brown bird bursts into my studio, followed by one angry barbet! Both hit the big window on the opposite side with an awful thud  . . and then crash to the floor.  But what proved to be a Lesser Honeyguide was up quickly then flew onto a windowsill where I was able to grab it.  Now, with the honeyguide clasped firmly in one hand I went down to look at the barbet which seemed to by dying with a broken neck. I quickly photographed the honeyguide (not too easy with one hand!) before releasing it. It flew off strongly.  I then went down and picked up the limp barbet and put it in a shoe box – it seemed to have some mobility in its neck but was clearly concussed. I put the lid on the box (birds calm down in small dark places) then left it alone for about 15 minutes. I then carried the box out into our tree house (right near the nest hole) and lifted the lid. The bewildered barbet looked at me groggily but was now able to fully rotate its neck. Five minutes later it was up and off, joining its clan in the ongoing war with the honeguides.

But here’s the thing:the barbets do not know that they are no longer defending their own offspring. There is a baby honeyguide soon to hatch and to be fed as if it were their own.

Turaco Wood, Nelspruit, South Africa. October 2012

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About Duncan Butchart

Duncan Butchart is interested in all aspects of the natural world, with a particular fascination for birds and their ecological relationships. www.dbnatureworks.com
This entry was posted in barbets, honeyguides and tagged , , , , , . Bookmark the permalink.

11 Responses to Double Trouble

  1. Beth says:

    Wow! This story has all the makings of a sublime soapie plot. So glad the dedicated barbet was revived, it deserves some reward for its efforts even if they all been sneakily cukolded!

  2. Peter Retief says:

    Duncan

    Lovely story – nature is never dull for those with eyes to see! Wish I had your “bird-eyes” L

    Peter

  3. Sam Parsons says:

    Great story. Will there be other installments? Could there be a inter-species scandal and a subsequent family rift? I do hope you witness more feuding! You just need to name them all and you have your own series…

  4. Jacquie says:

    Loved it ….. Very insightful.

  5. Tracy says:

    Duncan, Mrs Golden Tailed Woodpecker, who moved into the abandoned Barbets nesting log in Autumn, is still here. Still alone. Quite heartbreaking, really, to see her snuggled in the doorhole every evening, staring outwards…I believe they are monogamous, do you think she lost her mate and will be alone forever, or is she on the ‘manhunt’ – if so, destined for disappointment – nary another woodpecker sighted here the past 4 years! keep well

    • Duncan Butchart says:

      Hi Tracy – I am surprised to hear that she has not found a mate as these woodpeckers are not really uncommon in the area. There was a pair hanging around the Uplands Outreach complex a while ago and that is not too far from you . . . When monogamous birds do lose a mate, they seek out another or are found themselves by a partner. . . so let’s hope!

  6. Yvonne says:

    Great read!! I do miss our bird life in Nelspruit

    • Duncan Butchart says:

      Thanks Yvonne. Yes, we are spoilt rotten with the amazing bird diversity here! Alas, we are selling up and moving south after 20 years at ‘Turaco Wood’ . . .

  7. Matt says:

    Great read. I’m currently filming the black-collared barbets and the lesser honeyguide in our garden here on the West Rand. It started with this video (http://www.youtube.com/watch?v=UR0Z6bg_0Gc) and I will be uploading more. I managed to get some great shots and also have some GoPro footage of a, presumably, female barbet chasing off the honeyguide. I’m enthralled, I don’t want to go to work.

  8. Carl Vernon says:

    Duncan -most interesting – what was the outcome of the double-trouble – did the barbets rear a honeyguide chick ? Thanks Carl

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