Friday, October 13, 2017

The Pheasant Tailed Jacanas of Pallikaranai

I remember when I first saw the Jacana walk on water (well almost), it just blew my mind, and I spent hours at Dungarpur just observing their spidery legs and jerky movements.  

The pheasant-tailed jacana (Hydrophasianus chirurgus) is quite common in the wetlands of Chennai, and always make for interesting sightings as they dart on top of the floating vegetation.

Mr Ramanan is a regular Sunday visitor to the marshes of Pallikaranai and Sholinganallur and has documented their courtship and breeding over several years. The females are larger and more colourful than the male and are polyandrous.  it is the males that incubate the eggs!

Mr Ramanan notes, "In 2016 in the month of June I had come across two active nests of Pheasant Tailed Jacanas closer to the road side itself. The female is polyandrous and the male takes care of entire breeding of the chicks."

Mr Ramanan noted that the smaller male chased the female with which he had previously mated, 
went underneath the bird, pushed it from the squatting position.  it looked as if the male was suspicious of the female, and did not want another clutch of eggs of another male in its territory?

In another instant, Mr Ramanan observed the male take the chicks under its wing, when a predator was sighted.  The alarm call had been raised by the female.
This is the male's protection posture, with all the chicks underneath, looking like a single adult with eight legs!

Mr Ramanan captured this picture of the female's frightened posture, with body erect but tail down.  (And do see those claws!)
"Once the threat disappeared they started feeding as usual."

"The breeding plumages of the sickle shaped tail with predominant amount of chocolate-brown colour and in flight a large amount white, was observed from the month of May to June this year. On one occasion when the early morning sun rays peeped through the clouds, it painted the female Pheasant-Tailed Jacana with the golden touch of rays which really accentuated its silky golden coloured nape."
Mr Ramanan continued his watch of the PTJs through the summer of 2016 and 2017.  "The sign of chasing all other birds like white breasted water-hen and purple moorhen, from their territory in the month of July, indicated that it has already laid the eggs.  As expected the first chick emerged on the 4th of August, and were seen with the male Pheasant-Tailed Jacana which had shed the tail by that time. I was expecting for some more chicks on subsequent days but it was not to be and the male has only one chick as on 11th of August. On 9th of August again came across the protection display. This time just like last year the female raised the alarm call when a common kite hovered over it and the male with the feeble call attracted the chick and took it under its wings.   The female immediately hovered over and chased the Common Kite. It is clear from the above that female also played an active role while breeding in case of threat, apart from the role of guarding their territory."

Incubating male seen at Sholinganallur.
Notice the large brown eggs! PTJ females usually lay a clutch of four.
When a Shikra was sighted, the male PTJ aggressively left its clutch unguarded and chased the predator.
Returning after a successful chase!
With his keen eye, patience and regular documentation, Mr Ramanan has been able to put together an entire series on the breeding of the PTJs, which makes for a fascinating account.

The marshes and wetlands of Chennai - important and precious for so many creatures big and small.

5 comments:

  1. Very informative..will keep a close watch for them now..thnx again

    ReplyDelete
  2. thanks for you post...really good to see them...

    ReplyDelete
  3. A video from Mr Ramanan, from 2018, here: https://madraswanderer.blogspot.com/2018/12/ptj-redux.html

    ReplyDelete
  4. Urgent need female for egg donation with the sum of $500,000.00 3 crore,Email: jainhospitalcare@gmail.com
    whatsapp +91 9945317569

    ReplyDelete

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