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Striated Heron


Striated Heron
Photo Information
Copyright: Luciano Gollini (lousat) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 6448 W: 89 N: 15592] (65232)
Genre: Animals
Medium: Color
Date Taken: 2014-01-28
Categories: Birds
Camera: Sony Cybershot DSC HX200V
Exposure: f/5.0, 1/320 seconds
More Photo Info: [view]
Map: [view]
Photo Version: Original Version
Date Submitted: 2014-03-02 14:19
Viewed: 2238
Points: 40
[Note Guidelines] Photographer's Note
Class: Aves
Order: Pelecaniformes
Family: Ardeidae
Genus: Butorides
Species:B. striata

The Striated Heron (Butorides striata) also known as Mangrove Heron, Little Heron or Green-backed Heron, is a small heron. Striated Herons are mostly non-migratory and noted for some interesting behavioral traits. Their breeding habitat is small wetlands in the Old World tropics from west Africa to Japan and Australia, and in South America. Vagrants have been recorded on oceanic islands, such as Chuuk and Yap in the Federated States of Micronesia, the Marianas and Palau; the bird recorded on Yap on February 25, 1991, was from a continental Asian rather than from a Melanesian population, while the origin of the bird seen on Palau on May 3, 2005 was not clear.
This bird was long considered to be conspecific with the closely related North American species, the Green Heron, which is now usually separated as B. virescens, as well as the Lava Heron of the Galápagos Islands (now B. sundevalli, but often included in B. striata, e.g. by BirdLife International); collectively they were called "green-backed herons".
Adults have a blue-grey back and wings, white underparts, a black cap, a dark line extends from the bill to under the eye and short yellow legs. Juveniles are browner above and streaked below.
These birds stand still at the water's edge and wait to ambush prey, but are easier to see than many small heron species. They mainly eat small fish, frogs and aquatic insects. They sometimes use bait, dropping a feather or leaf carefully on the water surface and picking fish that come to investigate.
They nest in a platform of sticks measuring between 20–40 cm long and 0.5–5 mm thick. The entire nest measures some 40–50 cm wide and 8–10 cm high outside, with an inner depression 20 cm wide and 4–5 cm deep. It is usually built in not too high off the ground in shrubs or trees but sometimes in sheltered locations on the ground, and often near water. The clutch is 2–5 eggs, which are pale blue and measure around 36 by 28 mm.
An adult bird was once observed in a peculiar and mysterious behavior: while on the nest, it would grab a stick in its bill and make a rapid back-and-forth motion with the head, like a sewing machine's needle. The significance of this behavior is completely unknown: While such movements occur in many other nesting birds where they seem to compact the nest, move the eggs, or dislodge parasites, neither seems to have been the case in this particular Striated Heron.
Young birds will give a display when they feel threatened, by stretching out their necks and pointing the bill skywards. How far this would deter predators is not known.
Widespread and generally common, the Striated Heron is classified as a Species of Least Concern by the IUCN; this holds true whether the Lava Heron is included in B. striata or not.

AIRONE STRIATO

L'airone striato (Butorides striata Linnaeus, 1758) è un uccello della famiglia degli Ardeidi.
L'airone striato è una specie in gran parte stanziale. Il suo areale si estende dal Nuovo al Vecchio Mondo, e più precisamente da Panama all'Argentina, dall'Africa, attraverso l'Asia meridionale, fino all'Australia e alla Polinesia al sud, alla Corea e al Giappone a nord. Alcuni esemplari vaganti sono stati avvistati su isole oceaniche, come Chuuk e Yap (Stati Federati di Micronesia), nelle Isole Marianne e a Palau; l'esemplare avvistato a Yap il 25 febbraio 1991 non proveniva dalla popolazione melanesiana, ma dal continente asiatico, mentre il luogo d'origine dell'uccello avvistato a Palau il 3 maggio 2005 non è nota.
Nelle zone costiere questo uccello abita i boschi di mangrovie, e nelle regioni interne nidifica in prossimità di alberi e cespugli, lungo i corsi d'acqua.
Gli adulti hanno il dorso e le ali grigio-azzurre, le regioni inferiori bianche, la sommità del capo nera e corte zampe gialle. I giovani sono marroncini sopra e striati sotto.Questo uccello rimane immobile nei pressi dell'acqua per tendere agguati alle prede ed è più facile vederlo rispetto alla maggior parte delle specie di aironi di piccole dimensioni. Si nutre soprattutto di piccoli pesci, rane e insetti acquatici. Talvolta getta sulla superficie dell'acqua un'esca, costituita da una piuma o da una foglia, per arpionare i pesci che accorrono a curiosare.
Nidifica in una piattaforma costituita da ramoscelli lunghi 20–40 cm e spessi 0,5–5 mm. L'intero nido misura 40–50 cm ed è alto 8–10 cm; all'interno lo spazio è largo 20 cm e profondo 4-5. Solitamente viene costruito a poca distanza dal suolo su alberi o arbusti, ma talvolta viene edificato anche in zone riparate del suolo, quasi sempre in prossimità dell'acqua. Ogni covata è composta da 2-5 uova di colore azzurro chiaro di 36 x 28 mm.
Una volta un esemplare adulto venne visto comportarsi in modo peculiare e misterioso: mentre si trovava nel nido, prese un ramoscello col becco e iniziò a muovere rapidamente la testa avanti e indietro, come l'ago di una macchina per cucire. Il significato di questo comportamento è completamente sconosciuto: mentre tali movimenti sono stati osservati in altri uccelli nidificanti allo scopo di compattare il nido, spostare le uova o mandare via i parassiti, non sembra che questo airone striato abbia svolto queste occupazioni.
Quando si sentono minacciati gli esemplari giovani distendono il collo e puntano il becco verso l'alto. In che misura questo comportamento serva a scoraggiare i predatori non è noto.

ramthakur, nanreh, kinglove, Hussain58, bungbing, marius-secan, Alex99, anel, CeltickRanger, Chiza, oscarromulus has marked this note useful
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Critiques [Translate]

Just the perfect POV to shoot this handsome Heron perched on a rock amid flowing water, Luciano.
Wonderful ambience and a perfectly exposed image that shows the bird in its most attractive aspect.
You have made the best of the nature in Mauritius during your visit there.
Thanks.
Ram

  • Great 
  • nanreh Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 136 W: 12 N: 258] (2191)
  • [2014-03-02 19:43]

What a great benefit will you get to your visit to the island of Mauritius, Lu friend! Contratulations!

Hernan

Hello Mr
照的清晰 很漂亮的夜鷺
顏色鮮豔華麗 沒有看過這品種 真的很驚訝夜鷺會這美
光線亮麗 專業的照像就是不同 畫面很美 角度很棒
還有水的倒影 真是錦上添花 很棒的作品 很完美
構圖美麗 背景深遂
謝謝分享
STONE

  • Great 
  • PeterZ Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5136 W: 166 N: 13121] (49139)
  • [2014-03-03 2:47]

Hello Luciano,
Excellent photo of this Striated Heron. Fine sharpness, details, DOF and beautiful natural colours.
Regards,
Peter

Hi Luciano,
so you have been to Mauritius and brought a lot of nice pics with you I suppose.
this one is very nice with this little heron on his stone. Very clear and sharp. Well done my friend
have a nice day
Pierre

Hello Luciano,

Hope you are well. Your trip abroad has given us,TN friends, some wonderful shots of the exotic flora and fauna and this shot of the heron is no exception.You have photographed it in a perfect posture at the right time. The focus is sharp and the details of plumage, marvellous. Thanks a lot for sharing an amazing shot, take care,

warm regards/Abid

  • Great 
  • Ishi Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 298 W: 21 N: 1943] (13387)
  • [2014-03-03 4:12]

Outstanding capture, Luciano. It posed very well for you, and you took full advantage of the opportunity!

TFS,

Ishi

Hello Luciano,
A very well captured of this Heron, excellent details sharpness, and good natural colours, a lovely nature photo,
Thanks for sharing and have a nice evening,
Best Regards,
Bungbing.

hallo luciano
super good sharpness picture of this beautiful heron
great composition on this waterside

thanks greeting lou

Hello Luciano,
Brilliant in all aspects.....Incredible clarity, focus and sharp details. Very nice image. The exposure is perfect. The colors and contrast of this image are amazing. It is a splendid composition with a nice bird watching to the water for fish.
Thanks for sharing!
Marius.

Hello Luciano,
Beautiful picture of this Heron.Nice colour with very sharp details.Like its natural habitat..
Thanks for sharing,
Regards,
Srikumar

Ciao Luciano, decisamente stai diventando molto bravo con gli uccelli, ottima nitidezza, bei dettagli, delizioso lo sfondo, complimentoni, ciao Silvio

SUPER IMAGE........

Hello Luciano,
Wow! great capture,nice details and lovely composition.
Regards,
Joy

What a lovely shot Luciano!
stunning sharpness and colour.
Great ambiance also.
Best wishes,
Samiran

  • Great 
  • Alex99 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 4072 W: 133 N: 7096] (23735)
  • [2014-03-04 3:44]

Hi Luciano.
I am impressed with your bird pictures so much. They are as stunning as butterfly shots from you are. All is fantastic including wonderful reproduction of water surface. The whole scene, details of the wonderful bird as well as POV are incredible. Bravo and many thanks for kind words and wishes.
Alexei.

  • Great 
  • anel Gold Star Critiquer/Gold Note Writer [C: 3052 W: 3 N: 8715] (40572)
  • [2014-03-04 4:53]

Bonjour Luciano,
Une image très belle de cette espèce de héron vu aussi à Pamplemousses. Belle pose du l'oiseau, un arrière-plan de grande finesse grâce à la couleur de l'eau. Une "composition" centrée, j'aurais éventuellement choisi une présentation plus décentrée.
J'ai aussi beaucoup apprécié ta gentillesse exprimée dans ta dernière critique.
Amitiés
Anne

Ottimi profondità e dettaglio contro uno sfondo dio notevole impatto. Bravo. Bell'airone della Mauritius.

Roberto

Hello Luciano

Excellent photo of the Striated Heron in his fishing / hunting pose,
fine POV and DOF, beautiful lateral soft light, great focus,
sharpness, and details, TFS

Asbed

  • Great 
  • Chiza Gold Star Critiquer/Gold Note Writer [C: 133 W: 0 N: 474] (5351)
  • [2014-03-05 12:40]

Hola Luciano; hermosa foto de esta Garcilla que no es muy comun en Costa Rica, me gusta el entorno y la composición...saludos.

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