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Nankeen KestrelAlternate name(s): "Australian Kestrel", "Windhover", "Mosquito-hawk"; Misnomer: "Sparrowhawk*" Size: 30-35 cm; wing span 60-80 cm Body mass: 120-255 g Wing loading [g/cm2]: 0.27 (male), 0.30 (female) |
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Photos |
Race "cenchroides"
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ADULT |
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PAIR |
Many bird species exhibit sexual dimorphism, i.e., male and female
have differing appearances which can be quite subtle.
In the case of the Nankeen Kestrel the difference lies in the colour
of the cap; the male's is grey, the female's is brown.
Near-frontal/ventral view of a pair of Nankeen Kestrels,
female on the left, male on the right
[Eulah Creek, NSW, December 2023]
Near-frontal/near-dorsal view of a air of Nankeen Kestrels high up
in a dead tree
[Near Narrabri, NSW, August 2006]
Near-dorsal view of a pair of Nankeen Kestrels, female on the left
(photo courtesy of E.
Scott)
[Fairy Hill, northern NSW, June 2017]
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MALE |
Frontal view of an adult male Nankeen Kestrel; note the grey cap
[Eulah Creek, NSW, December 2008]
Close-up lateral view of a male Nankeen Kestrel
[Goran Lake, NSW, September 2022]
Lateral view of a male Nankeen Kestrel
(photo courtesy of
V. Collins)
[Near Narrabri, NSW, November 2020]
Lateral view of a male Nankeen Kestrel; here one can see that in
males the uppertail is also grey
[Narrabri, NSW, July 2012]
Near-dorsal/ventral view of a male Nankeen Kestrel
[20 km South of Narrabri, NSW, September 2006]
Frontal view of a male Nankeen Kestrel banking to land;
note the - largely undocumented - dark
alulas
(photo courtesy of
V. Collins)
[Near Narrabri, NSW, November 2020]
Lateral view of a male Nankeen Kestrel in flight
[Narrabri, NSW, July 2012]
Close-up near-dorsal view of a male Nankeen Kestrel taking off
(photo courtesy of J. Boettcher, FNQ Nature Tours)
[Yungaburra, Atherton Tablelands, QLD, June 2020]
Ventral view of a male Nankeen Kestrel in flight
(photo courtesy of P. Brown)
[Cox Peninsula, NT, May 2021]
Ventral view of a male Nankeen Kestrel in flight
[Narrabri, NSW, July 2012]
Ventral view of a male Nankeen Kestrel in flight;
note the - largely undocumented - dark
alulas
[Eulah Creek, NSW, September 2026]
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FEMALE |
Frontal view of a resting female Nankeen Kestrel
[Goran Lake, near Gunnedah, NSW, April 2022]
Frontal view of a female Nankeen Kestrel
(photo courtesy of P. Brown)
[Cox Peninsula, NT, May 2021]
Close-up frontal/ventral view of a female Nankeen Kestrel
[Eulah Creek, NSW, July 2022]
Near-frontal view of a female Nankeen Kestrel
(photo courtesy of M. Eaton)
[Dundowran Beach, Hervey Bay, QLD, May 2018]
Close-up near-lateral view of a female Nankeen Kestrel
(photo courtesy of J. Boettcher, FNQ Nature Tours)
[Tinaroo, Atherton Tablelands, QLD, June 2020]
Near-lateral view of a wet female Nankeen Kestrel
(photo courtesy of J. Boettcher, FNQ Nature Tours)
[Musgrave, Cape York peninsula, QLD, September 2020]
Close-up lateral view of a female Nankeen Kestrel looking at the observer
(photo courtesy of J. Boettcher, FNQ Nature Tours)
[Tinaroo, Atherton Tablelands, QLD, June 2020]
Close-up lateral view of a female Nankeen Kestrel on a fence post
looking towards the observer
[Harparary, NSW, July 2011]
Close-up lateral view of a female Nankeen Kestrel on a fence post
[Harparary, NSW, July 2011]
Close-up near-dorsal view of a female Nankeen Kestrel looking sideways
(photo courtesy of J. Boettcher, FNQ Nature Tours)
[Tinaroo, Atherton Tablelands, QLD, June 2020]
Close-up dorsal view of a female Nankeen Kestrel looking back at the
observer
[Eulah Creek, NSW, April 2023]
Lateral/ventral view of a female Nankeen Kestrel in flight
[Near Bellata, NSW, September 2011]
Close-up near-dorsal view of a female Nankeen Kestrel in low flight
(photo courtesy of J. Boettcher, FNQ Nature Tours)
[Tinaroo, Atherton Tablelands, QLD, June 2020]
Dorsal view of a hovering Nankeen Kestrel
(photo courtesy of R. Plumtree)
[Ensay South, East Gippsland, VIC, August 2015]
Ventral view of a female Nankeen Kestrel in flight
(photo courtesy of P. Brown)
[Cox Peninsula, NT, May 2021]
Leucistic Nankeen Kestrel
Lateral view of a
leucistic
Nankeen Kestrel
(photo courtesy of J. Boettcher, FNQ Nature Tours)
[Mareeba, QLD, June 2024]
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IMMATURE/JUVENILE |
Lateral view of a juvenile Nankeen Kestrel hunting off a power line
[October 2011]
Close-up near-dorsal view of a juvenile Nankeen Kestrel
[Near Cryon, NSW, May 2022]
Road sign advising traffic to slow down because of Nankeen Kestrel
traffic...
[Near Cryon, NSW, May 2022]
Ventral view of a juvenile Nankeen Kestrel
[Eulah Creek, NSW, February 2011]
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Breeding information |
| Breeding season: Jul - Nov | Eggs: 3 - 4 | Incubation period: 28 - 29 days | Fledging age: 28 - 31 days |
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Twitcher's tip |
Note that, by the time they fledge (i.e., leave their nest), the young of all species of raptors - apart from the tail and wing feathers (which are still growing) - are already full adult-size.
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Nest |
"bungobittah", "lar", "malunna", "jindi" [bundjalung] = nest [Aboriginal] |
| Type: Tree hollow* | Material: Wood dust, gravel | Height above ground: 5 - 20 m |
* Nankeen Kestrels usually build nests in tree hollows, but will also re-use disused basket stick nests by other species. They are also known to nest in depressions in cliff hollows or on rock ledges.
To see a different kind of Falcon nesting in a River Red Gum, click HERE.
View from above into the nesting hollow of a pair of Nankeen Kestrels,
with two near-fledging age chicks in it; note the remnants of a lizard
and the otherwise clean gravel lining (photo courtesy of R. Brinsley)
[85 km West of Wentworth, NSW, 2007]
3 (of 4 in total) Nankeen Kestrel chicks sitting near the opening
of their nest hollow
[Eulah Creek, NSW, November 2025]
2 (of 4 in total) Nankeen Kestrel chicks sitting near the opening
of their nest hollow
[Eulah Creek, NSW, November 2025]
Two nosy little Nankeen Kestrels having a good look at the photographer;
their nest is in a
River Red Gum
[O'Brien's Creek, Narrabri Lake, NSW, November 2011]
Frontal view of a male Nankeen Kestrel sitting in the opening of its
nest hollow
[Harparary, NSW, October 2012]
Female Nankeen Kestrel looking into its nesting hollow (photo
courtesy of R. Druce)
[Maules Creek, NSW, 2012]
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Eggs |
"boyanga", "booyanga", "derinya", "dirandil", "koomura", "mirk", "ngampu", "nooluk", "pateena", "pum-pum" = Egg; "dirundirri" = eggs [Aboriginal]; "gawu" = eggs [gamilaraay] |
| Size: 37 x 30 mm | Colour: Light-brown, heavily speckled with darker brown/black/reddish speckles | Shape: Tapered oval |
Clutch of 4 Nankeen Kestrel eggs in a re-used Chestnut-crowned Babblers' nest
(photo courtesy of D. Johnston)
[Inland NSW, 1980ies]
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Behaviour |
| Social behaviour: Territorial | Mobility: Sedentary | Elementary unit: Pair |
Birds, in particular raptors, that hover above their prey will always do so facing into the wind to get optimal air lift.
Like many other raptors, Nankeen Kestrels sometimes hunt hovering in updrafts on hill or mountain slopes. The photo below shows how the wings can be angled when there is too much air lift for a bird to fully extend them while maintaining position.
Nankeen Kestrels have been by us to hustle raptors as powerful as (and nesting in the same tree with) a Whistling Kite.
Spotted Harrier
getting in the way of a Nankeen Kestrel
[Eulah Creek, NSW, July 2013]
For unknown reasons this female Nankeen Kestrel overpowered a
Common Starling,
but then released it again
(photo courtesy of R. Plumtree)
[Benambra, East Gippsland, VIC, December 2017]
Nankeen Kestrel vs. juvenile
Torresian Crow,
in an argument over who was going to roost in a nearby tree;
for audio click here
[Eulah Creek, NSW, January 2023]
Close-up frontal view of a female Nankeen Kestrel on its roost,
after defending it against a juvenile
Torresian Crow
[Eulah Creek, NSW, February 2023]
Close-up frontal view of a female Nankeen Kestrel on its roost,
after defending it against a juvenile
Torresian Crow
[Eulah Creek, NSW, February 2023]
Close-up near-lateral view of a female Nankeen Kestrel on its roost,
after defending it against a juvenile
Torresian Crow
[Eulah Creek, NSW, February 2023]
A few weeks later, a male Nankeen Kestrel was found roosting in
the same tree
[Eulah Creek, NSW, March 2023]
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Food, Diet |
| Adults: Small rodents, insects | Dependents: As adults | Water intake: None |
All raptors are carnivores. Nankeen Kestrels prey on small rodents, such as mice, lizards and large insects, e.g. locusts.
During the first few weeks, raptors feed their chicks with pieces of meat. Later on in their development, the chicks learn to tear apart their parents' prey.
Male Nankeen Kestrel with a mouse it has just caught
(photo courtesy of R. Plumtree)
[Ensay South, East Gippsland, VIC, June 2016]
Male Nankeen Kestrel with a substantial meal - a lizard whose tail
is much longer than that of the kestrel
[Near Narrabri, NSW, September 2019]
Female Nankeen Kestrel diving into tall grass trying to make a catch
(photo courtesy of R. Plumtree)
[Ensay South, East Gippsland, VIC, May 2015]
Lateral view of a Nankeen Kestrel plucking a
Chestnut-breasted
Mannikin; in a strange twist of fate, that same bird was
photographed
only moments earlier - the bird may not have been 100% fit because
this is the only instance known to us in which a Nankeen Kestrel
has taken a bird
(photo courtesy of J. Boettcher, FNQ Nature Tours)
[Mareeba, QLD, March 2024]
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Call(s)/Song |
For this species we have recorded the following call(s)/song. The
interpretation of their meaning is our own;
comments and suggestions for improvement
are welcome.
| nankest_20200216.m4a |
cenchroides (NW NSW) |
Contact calls (in-flight) | © MD | |
| nankest_20140622.mp3 |
cenchroides (NW NSW) |
Contact calls | © MD | |
| nankest_20160910.mp3 |
cenchroides (NW NSW) |
Contact calls (in-flight) | © MD | |
| nankest_20170110_1.mp3 |
cenchroides (NW NSW) |
Welcome/mating(?) call | © MD | |
| nankest_20160126.mp3 |
cenchroides (NW NSW) |
Upset (swooping Brown Goshawk) | © MD | |
| nankest_20160126_2.mp3 |
cenchroides (NW NSW) |
Upset ( Brown Goshawk) | © MD | |
| nankest_20230130_2.mp3 |
cenchroides (NW NSW) |
Upset (roost competition with Torresian Crow) | © MD |
More Nankeen Kestrel sound recordings are available at
xeno-canto.org
.
These pages are largely based on our own observations and those of our contributors. The structure of these bird pages is explained HERE. For more salient facts on any bird species please refer to a field guide.
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Would you like to contribute photos or sound recordings to this
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If interested, please CLICK HERE. Credits to contributors are given HERE. |












































