Showing posts with label Yercaud. Show all posts
Showing posts with label Yercaud. Show all posts

Friday, April 12, 2019

Brown on brown

Junonia lemonias, the lemon pansy

Crunching dry leaves of summer,
eyes staring at me,
a basking pansy did I come across.

Monday, June 18, 2018

Roly poly puchi

Chetan dropped this into my hand while at the Yercaud camp this summer. No, its not a nut or fruit, but a roly poly puchi!  It was so tightly rolled up like one of those well-made cases that cannot be opened.
Leave it alone, and after a good 45 seconds, it slowly unfurls and becomes this.



Seems to be, this is a pill millipede, and not a pill bug.  The latter is actually a crustacean, and from what I read, my puchi seems to be a puchi only and therefore the former.  I may be wrong, may be right....

Thirteen body segments and they feed on dead matter from what I read.  So, not a pest, but one of those little ancient critters that quietly go about recycling decomposing plant matter.




How many push ups can you do?

I have been seeing a lot of rock agamas of late.  At Yercaud.

I have seen the males do push ups, as they occupy the highest rock, chase other males, and I also came across females digging holes really deep for the purpose of egg laying.

The videos below are of her digging exploits.






After she was done, she covered the hole and it was fascinating that the sight of the digging could not be detected, so well was it camouflaged.

Our human male gym show-off can be assured that his behaviour is no different from that of the rock agama, and is a deep evolutionary behaviour.  I shall treat it with less scorn and impatience from now on!

Why do rock lizards display varied behaviour?

Study provides rare evidence of why animal signals are relevant in nature

Lizards may perform comical push-ups, head bobs or suddenly transform from a stunning crimson body colour to a paler shade in just a few seconds, but this is no game. A recent study on male rock agamas published in Frontiers in Ecology and Evolution shows that such ‘signals’ advertise their quality to prospective mates and competitors.
An animal’s quality or ‘fitness’ — measured by how successfully it obtains mates and reproduces — is an important concept in evolution, showing how well an animal’s ‘strategy’ does in nature. So what do these males do to win females over?

Multiple signals

To find out, Shreekant Deodhar and Kavita Isvaran of Bengaluru’s Indian Institute of Science studied all behavioural and physical (changes in body colour) signals displayed by 41 wild male rock agamas throughout the lizards’ lifespan (for around 2.5 years) in Andhra Pradesh’s Rishi Valley. They found that males used multiple signals, including head bobs, push-ups and neck flap extensions. Males often used these traits all at once; the frequency of most of these traits increased with the number of females in the vicinity, suggesting that these signals — directed towards females — are maintained by female choice.
“These behaviours may help females judge a male’s quality quickly and more accurately,” says lead author Deodhar. “It is often [energetically] costly to display all these signals together, and if a male does this, it can indicate his quality.”
But there are costs to such flamboyance: it attracts predators and fellow competitors. The scientists found that most of these displays reduced in the presence of predators, proving that predation risk too played a role in the use of signals. Some colour-changing traits could be aimed at multiple receivers including competitors, but detailed experimental studies would be necessary to understand this better, says Isvaran.

Rare evidence

The team also quantified male ‘fitness’, which is usually extremely difficult to measure in the wild. Observing males throughout their lifetimes, Deodhar noted how many females each male had access to per day and ‘breeding tenures’, the time for which males occupied territories during the breeding season (the longer this time, the more the access to females). Males that signalled more had longer breeding tenures; thus these signals are relevant biologically because they also affected lifetime reproductive success.
“The biological relevance of this finding is also exciting because it is often difficult to follow individuals across their lifetimes,” says Isvaran.
Agamas are well suited to answer this question because they have short lifespans, perform very unusual displays and live in open habitats which makes it easy to study their behaviour, she adds.

Thursday, May 24, 2018

Wildflowers of Yercaud

I need help in identifying these little beauties that dotted the paths and undergrowth, on the slopes of the Yercaud range. I enjoyed looking for them.

The untrodden areas were covered with these little white stars.
A close-up of the same flower
Common Floss flowers (I think)was also common, especially in the more moist patches, on the banks of streams.

I have no idea what this dramatic spiky ball is!

Little Glories - so small that one could miss them entirely.

Common wood sorrel was everywhere.  This is puliyarai (Tamil) or khatti bhaj (Hindi),
huli soppu (Kannada), is eaten raw and is good for health.

Looks like jasmine doesn't it? Id needed.

Pink rain lilies!

Another unidentified beauty

I found this in more rocky areas.


Jamaican Blue Spikes were always humming with little bees and insects.

Morning Glory, indeed!

Apona Shevaroyensis

April/May 2018

This large brown moth was seen every night at the Yercaud Youreka camp. Attracted by the lights of the dining hall, they would come and sit on the rafters, as also rest on the floor. Unfortunately, the ambient light was poor and I had only my phone camera to depend upon.

The moth was a light brown, with hairy antlers and was around 12-15 cms wingspan.  It was slow and clumsy.

I went through Ryan Brook's amazing collection of moth pictures on Flickr, and have made a tentative guess.




Tentative id is Eupterote geminata


If it is a correct id, then this moth is seen ony in India and Sri Lanka, and was identified by someone called Walker in 1855!!

Update - 2022 - Thanks Sagarika.  Looks like Apona-shevaroyensis.  I will update the id.

Viraali - The Sand Olive or Sticky Hopbush tree


Dodonea angustifolia - An evergreen shrub that grows in rocky outcrops

I was fascinated by the gloss of its leaves. 
I would always find a butterfly or bee hovering around. 
It is used for firewood and for small implements, but is also good as a bee forage and for stabilising and reducing erosion.

A different purple - in the hills of Yercaud

April 2018

The hills were alive
with the colours of the Crepe Myrtle.
Pride of India.

Lagerstroemia




The Jacarandas of Yercaud town - a photo post

April 2018

Yercaud town was aflame in purple. Every estate, every street, around the lake, across the valley. Fallen flowers on the road, boughs laden with flowers in eye view....











Saturday, April 28, 2018

Nellikai!


Gnarled branches
jewelled white,
a delicate touch of pink.
Impermanent
Precious.




Coffee flowers

My first experience of the gentle but persistent fragrance of coffee flowers.
Beautiful of course.

My brain was confused.  The aroma memories of coffee so different from that of these blooms.  Delightful!

A week later, they were all gone.  I was glad for these pictures.

Andaman Day 4 and 5 - Rangat scrub and open forests

Continued from here.  Click here for the previous post.  Feb 13th 2024 - Our Post lunch wander The post-lunch session is always one that req...