Fwd: Oriental White Eye and Yellow Oleander

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JANAKI TURAGA

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Dec 13, 2009, 12:35:42 AM12/13/09
to treepix Indian
HI all,
Would appreciate any inputs on this.
My question is are there any antidotes available as natural antidotes to Yellow Oleander tree  Thevetia peruviana which are commonly available as food source to birds-such as Oriental White Eyes and Asian Koels?
And has any member observed any other birds/animals feeding on the flowers, fruit and nectar of Yellow Oleander tree other than Oriental White Eyes, Asian Koels and Purple Sunbirds?
Kind Regards
Janaki Turaga

---------- Forwarded message ----------
From: JANAKI TURAGA <janaki...@gmail.com>
Date: Dec 9, 2009 6:04 AM
Subject: Oriental White Eye and Yellow Oleander
To: delhib...@googlegroups.com, delh...@yahoogroups.com

 
Hi all,
I saw a flock of Oriental White Eyes (approximately 10) (just like as described by Salim Ali!), flitting amongst avenue trees of acacia and Yellow Oleander. Few Oriental White Eyes were surprisingly (for me at least) feasting on the poisonous fruits of the Yellow Oleander Tree. I thought this was unusual and I have not seen any bitten/half eaten fruit of the Yellow Oleander tree ever, until yesterday. It also raised the question of how do the birds neutralise the poison in the fruits, and whether there are natural antidotes for these poisonous fruits. It was evident that the fruits are consumed by Oriental White Eyes- at the very least, as seen in the littering of half eaten fruits beneath the tree. The half eaten fruit litter was very like that of parakeets' feast of guava fruits in the orchard!
I must mention that I have seen Purple Sunbirds feed on the nectar of these flowers! Since all parts of the plant are poisonous, what about the nectar, would that be poisonous too?
Afraid the file size is big and has exceeded the limit! Also the picture quality-this was the best that was possible.
Would appreciate any feedback on this.
Camera: Canon Digital Elph SD 600, Auto image correction in Canon Software
Kind Regards
Janaki Turaga

OirentalWhiteEye&YellowOleanderCollage.jpg

Dinesh Valke

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Dec 13, 2009, 1:23:56 AM12/13/09
to JANAKI TURAGA, treepix Indian
Janaki ji, ... many a times ants are seen around the flowers ... not sure at ll - whether they use it for food ... attached one photo of Thevetia peruviana 'Alba'.
Regards.


 

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Thevetia_peruviana_Alba.jpg

JANAKI TURAGA

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Dec 13, 2009, 1:52:15 AM12/13/09
to Dinesh Valke, treepix Indian
Thank you, Dinesh ji

JANAKI TURAGA

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Dec 14, 2009, 12:35:03 AM12/14/09
to C KUNHIKANNAN, treepix Indian
Thank you  for bringing into focus the point that not all plants are poisonous to all living beings and that some parts are not poisonous to some living beings!
Incredible diversity and tolerance!
Kind Regards
Janaki Turaga
 
On 12/13/09, C KUNHIKANNAN <kunhi...@gmail.com> wrote:
As my knowledge goes the poisonous plants are not poisonous to every animal in same manner. Neem has insecticidal properties. but there are several insects larvae  feeds on neem leaves. Calotropis procera / C. gigantea are poisonous but certain caterpillers feeds on the leaves. I think the seeds of Thevetia peruviana are poisonous, but fruit pulp is not poisonous. White eye may be relishing only the fruit pulp. similarly Cerbera odolam a member of same family (Apocynaceae) produce very poisonous fruits, some times people use this for suicide,  but leaves are used as fodder.
Kunhikannan 
 
On Sun, Dec 13, 2009 at 11:05 AM, JANAKI TURAGA <janaki...@gmail.com> wrote:

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Dr. C.Kunhikannan,
Division of Biodiversity,
Institute of Forest Genetics and Tree Breeding,
Forest Campus,  R.S.Puram,
Coimbatore-641002, Tamilnadu.

JANAKI TURAGA

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Dec 14, 2009, 12:37:21 AM12/14/09
to Rakesh Biswas, treepix Indian
Thank you Rakesh ji, for ;highlighting the point of relative notion of 'poison' and tolerance of poison!
Very interesting and intriguing!
Kind Regards
Janaki Turaga

 
On 12/13/09, Rakesh Biswas <rakesh...@gmail.com> wrote:
Very interesting point Janaki Ji,
 
I too recently came across another plant Cestrum diurnum which is poisonous to humans and other mammals, affecting the nervous system (Kingsbury 1964, Krook et al. 1975, Morton 1982) and yet birds are responsible for its seed dispersal.(Morton 1982).
 
Would be nice to investigate this further and hear from the experts who could throw more light into this.
 
regards
 
rakesh

 
On Sun, Dec 13, 2009 at 11:05 AM, JANAKI TURAGA <janaki...@gmail.com> wrote:
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