Little owl breeding behaviour
Guest blogger: Emily Joáchim on her passion for and research into little owls.
I've always been fascinated by the natural world and have been researching little owl ecology in Britain for the past three years. Using nest box cameras to help me, I'm investigating dispersal behaviour, breeding biology, diet and feeding behaviour.
I developed the nest box cameras with the systems engineers at the University of Reading to help me monitor little owl feeding behaviour during the breeding season. We installed the cameras into three little owl nest boxes as part of a long term raptor monitoring programme in Wiltshire that was initiated by Major Nigel Lewis in 1983.
Every time a little owl enters or exits the nest box, a video file is recorded. The footage enables me to look at how often food is brought to the nest site, the types of prey that are caught and whether it’s the mother or father little owl who is catching the food.
I feel very privileged to be working so closely with little owls. They have exciting personalities and I'm always amazed to observe how hard the parents work to raise their young. There's an element of mystery about them due to their mainly nocturnal behaviour.
It's really exciting to think of them working hard during the night, and every encounter with a little owl is as exciting as the first. Their wonderful, frowning expressions and almost quirky behaviour makes it a pleasure to observe them, whether it be watching them sunbathe on a warm summer’s afternoon or hunting at dusk.
I really admire how hard the parents work during the breeding season and how brave the female is when she is incubating her eggs. We check how many eggs each female little owl has laid once a year and the female stays sitting on her eggs whilst we do so. They are remarkable birds.
The little owl was introduced into Britain during the late 19th century and rapidly spread throughout much of England and Wales. I decided that I wanted to work with them when they were reported to be in moderate decline in Britain. I'm hoping to learn more about the little owl ecology by looking at long term data sets, monitoring individual pairs and linking their breeding productivity with habitat.
A typical little owl brooding period:
The mother incubates the hatchlings almost continuously for their first five days. At this point they're covered in white down and their eyes are closed. They can't thermo regulate so they rely on their mother to keep them warm and huddle up together if she briefly leaves the nest site. The father does most of the hunting at this stage. The juveniles can stand on their talons after a few days, but remain very wobbly and can only walk a few steps.
When the juveniles are seven days old, their down changes from white to pale gray. Their talons and tarsus are continuing to develop and they are a bit more steady on their feet. The mother will start hunting more to keep up with the juveniles increasing food demand. Prey items include moths, worms, small mammals, small birds (sparrows, finches etc) and ground beetles.
Hunting usually takes place at dusk, during the night, and slows down at dawn. They are extremely hard working parents with the male flying in and out of the box with prey items whilst the mother does most of the provisioning.
If you'd like to find out more or get in contact, visit my research page.
Emily Joáchim is a final year PhD Research Student at the University of Reading. She studied Zoology at the University of Reading and has volunteered for various conservation organisations including Avon Wildlife Trust, the Institute of Zoology and the Hawk Conservancy Trust. The little owl project has various sponsors including the Hawk and Owl Trust, World Owl Trust and Aspira Fund.
Watch our film about Emily and her little owls on Springwatch, 8pm 31 May
Comment number 1.
At 19:44 31st May 2011, Harry Butler wrote:Could this series of Springwatch give some idea of the 'spread' of the red kite. Last year (late summer) I'm certain I saw a red kite overhead here in Burgess Hill West Sussex. Characteristic 'buzzard' finger feathers at wingtips and a precisely triangular tail. I've seen them on the M4 near Bracknell - but could they now be this far east ??
Thanks
Harry
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Comment number 2.
At 20:19 31st May 2011, The Churchers wrote:is it a little owl?
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Comment number 3.
At 21:10 31st May 2011, Mark Fleming wrote:Those links are duff guys. :(
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Comment number 4.
At 13:48 1st Jun 2011, 122abcdefghi wrote:Well done, Emily, we enjoyed seeing this and here’s to continued success with your projects and research.
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Comment number 5.
At 13:51 1st Jun 2011, 122abcdefghi wrote:That should read "...here's to continued success..."
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Comment number 6.
At 15:18 1st Jun 2011, birdersrock wrote:This comment was removed because the moderators found it broke the house rules. Explain.
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Comment number 7.
At 18:01 1st Jun 2011, Thomas Moss wrote:Hello,
I saw a little owl flying over a barn in between Rhosllanerchrugog and Llangollen. And then a kestrel came past and the owl shot into the landed area. Why was it doing that?
Thomas
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Comment number 8.
At 22:01 1st Jun 2011, Cunliffe 704 wrote:Hopefully I can some help even though it doesn't relate to your present blog? I'm trying to find details of Owl Boxes and looking on web sites hasn't helped so far. Can anyone suggest a successful type of box(es) to a beginner?
thanks Stephen, Cheshire
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Comment number 9.
At 12:42 2nd Jun 2011, lyn wrote:"fantastic " best springwatch so far .
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Comment number 10.
At 00:32 17th Jun 2011, EnglishFolkfan wrote:Thanks for this Blog & the excellent SW items on The Little Owl and Emily's research work. Hope we can be kept updated on her progress & this years Little owl families.
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Comment number 11.
At 02:23 17th Jun 2011, Emily_Joachim wrote:Dear All, Thank you for your lovely comments about Little Owls and my project. In reply to your questions:
Thomas Moss: The Little Owl probably 'shot' into the covered area when it saw a Kestrel to avoid a conflict between them.
Cunliffe 704: Fantastic news to hear that you would like to put up some owl nest boxes. You will find an excellent Little Owl nest box design if you follow this link: www.bto.org/sites/default/files/u15/downloads/nest_record_scheme_home/LITOW_box_design.pdf
EnglishFolkfan: I will post an update on the Little Owl family via the Hawk and Owl Trust Facebook group page. I am expecting the eldest juveniles to start branching by this weekend, shortly followed by the youngest juveniles, which are 1-2 days younger.
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