Wheat fields, flooding, snakes and storks

The setting of winter in the northern Indian landscape signals a major change in the crops. After harvesting the rice, farmers plant mustard and wheat. Unlike the rice, that requires to be flooded, wheat needs the soil to be just wet. Farmers achieve this by flooding the fields intermittently. This sets off an unanticipated set of events. Mice and snakes in burrows recently dried out are forced out again and again.

Large waterbirds in Uttar Pradesh seem to have figured this circumstance out - to their benefit. In this set of photographs, I share our observations of a Woolly-necked Stork successfully dispatching a keelback. 

We missed seeing how the stork actually caught the snake, but the photo below shows the bird with the struggling snake, shaking it violently. As we watched, the snake became visibly weaker and nearly stopped attempting to escape altogether. 

 A Woolly-necked Stork with its catch of the morning - a keelback - in a wheat field.

The stork picked up the weakly struggling snake, carried it over to a drier spot near the dike and began beating the head with its beak. The photo below shows the snake - that is hopefully dead by now - with its bloodied head.

  

The bloodied and hopefully dead keelback awaiting the swallow.

Storks swallow snakes headfirst, and whole. This is easier said than done when the snake is a mite bigger than the usual small prey items that storks swallow. The photos below, that took well over a couple of minutes, show the difficult process.

Head-first is how storks like to swallow snakes.

The biggish keelback presented a bit of a problem to the Woolly-necked Stork, but it managed.

In the keelback went, and the serious swallowing began!

After a few minutes, many many swallows later, the snake completely disappeared visible only as a bulge in the stork's neck (above).

Though a snake being swallowed by a stork is pretty commonplace, given that snakes are commonly taken prey by these birds, what we watched represented much more. Human habits (planting wheat and intermittently flooding them), animals attracted by crops (rats in burrows, that in turn attracted snakes), and other wild species (here, a Woolly-necked Stork) all came together to make for a memorable viewing. 

(Photos information: Taken in Etawah district, Uttar Pradesh; taken on 5 Jan 2013.)

Getting an earful

Bank Mynas and water buffaloes hit it off just great. The buffaloes have plenty of treats walking around on them for Mynas to actually be territorial on the buffaloes' back.

But the real battles are fought at the ears, for the ears, and going by how the buffaloes endure the vociferous battles taking place at their ear, it must be good for the ears.

(Photograph details: Mynas on buffaloes - shot at Basai wetland in Haryana on 6 Sep 2008; the vocal battle for the ear - shot at Etawah on 12 Feb 2009.)

Body language

Cranes have among the largest non-vocal communication repertoires in the animal kingdom. Body language is exceedingly important. Here are a few Sarusy gestures that other cranes would know the meaning of instantly.

Wing half-open, an exaggerated walk with legs raised higher than usual, this crane walks up very meaningfully to another Sarus that had landed uncomfortably close to an active nest. The interloper got the message rather quickly!

Crane employ a large number of threat postures increasingly aggressive in their meaning. This female (right extreme) gives a classic ruffle-threat combined with a bow to the pair adjacent to her territory while her partner engages them at closer quarters.

This rare bow-threat is carried out with elan and grace successfully dissuading a pair flying overhead from landing in this crane's territory.

Cranes' large body size and incredible physical prowess poses a great risk of physical injury should they need to joust physically each time a disagreement occurs. Non-vocal postures with specific meaning, like the three above, are a safer alternative for all concerned.

(Photographs information: Top: 10 Jul 2008, Mainpuri district; middle: 28 Nov 2008, Etawah district; bottom: 07 Sep 2009, Farrukhabad district.)

Waterbird foods: Black-necked Stork

Despite their large size and declining population, Black-necked Storks have received relatively little scientific attention. The most prominent study is that carried out by Gopinathan Maheswaran in the managed lakes in Dudwa Tiger Reserve in northern Uttar Pradesh. The storks there were seen to eat fish as their major food.

The unmanaged wetlands amid agricultural fields in western Uttar Pradesh have the largest known population of this species. Here, observations show that fish is not likely their major food - frogs (and reptiles) are! The photographs above show (from top) newly fledged juveniles have already learnt to catch frogs, snails sometimes figure in the diet of juveniles, and large bull frogs make for a great meal and are literally beaten to death by adults before they are swallowed.

(Photo information: top: 21 Jan 2009, Etawah district; middle: 7 Apr 2009, Etawah district; bottom: 12 Apr 2009, Etawah district. I put together all the observations I had made over the years of food items that Black-necked Storks ate, and now have a note in the journal Forktail in case you are really interested.)

Chambal diary: 5. Little Tern

The Little Tern is the smallest of the resident terns in the Chambal - tiny compared to the much larger skimmers and river terns. Instead of a neat full black cap, they have a white forehead, and a streak of black serving as eye-patches. Their legs are also much less colourful compared to their fellow terns and skimmers.

In this entry, I describe the nesting behaviour of this species of terns. Most of this behaviour is common with the other terns and the skimmer. This blog entry gives a snapshot into the part-ritual and part-politics that is an inherent part of the terns' lives.

The first thing to do for the males is to find a female who does not chase them away. A gift of a fish is mandatory to beginning the courtship ritual. Birds paired initially like this spend a long time - sometimes hours - standing in the position showed above calling to each other. The male ensures that the female does not snatch the fish away, but keeps it as tantalising bait until the female is ready to mate.

Competition for mates is common! Here, a male with a much larger fish tries to break up the courtship, but the male and the female bird that have bonded scare away the interloper. Clearly, size of the bait-fish is not everything!

After much posturing and courtship, the female finally allows the male to mate with her, and the male relinquishes the fish.

Mating itself lasts a very short time.

It appears to be the males' job to choose the spot where the female will lay their eggs. It is also his job to create the depression in the sand that will serve as the nest. The bird uses its belly, wriggles around in a circle until a depression is formed. The female watches over the whole exercise carefully.

Nests are located some distance from each other, and pairs are fiercely protective. There is a lot of jousting for space - both on the sand and in the air. Observing birds that nest in riverine islands is very rewarding. There is seldom a boring moment. Obsevers need to be very careful not to disturb the birds. It is less important to get full-frame photographs, for example, than it is to ensure that the birds are not disturbed.

Islands in the Chambal are exceedingly important for populations of a range of species, and here is to wishing that it continues to be do!

(All photos were taken on Apr 10, 2009 at the National Chambal Sanctuary, Etawah.)

Chambal diary: 2. Black-bellied Tern

Terns and Gulls are closely related and are usually associated with coastal areas. Indian inland rivers have breeding populations of a few species of terns that are specialized to reside and live off these rivers. The Black-bellied Tern is one such species. Good numbers of this species are found in the Chambal suggesting that conditions for breeding and feeding (mostly fish!) are currently good.

These birds breed in early summer on islands formed due to the reduction of the water levels. Dams, increased agriculture, and excessive accumulation of sand in the rivers can limit the formation of islands leading to reduction of breeding activity of birds like the Black-belled Terns. But enough lecturing - here are a couple more photos of this beautiful bird.

Two Black-bellied Terns mate on an island. Eggs will be laid on a small scrape on the sand, and both parents take turns to incubate eggs and to raise the chicks.

Black-bellied Terns are aggressive parents. Here one bird attacks a much larger egret - successfully - which strayed a little too close to the nest.

(Photos were taken on Apr 9, 2009 at the National Chambal Sanctuary, Etawah.)

Its clean-up time!

Preen, dip, bathe, and scratch! These are the various ways in which birdies take good care of their precious feathers. Here are a few examples taken during clean-up time!

Preening is so very time-consuming! Here an Indian Skimmer (top) uses its unusual, spectacular beak to comb through feathers, and a Silverbill is busy at it while also showing off the preen gland (just above the tail) from where birds get an "oil" to keep their feathers ship-shape!


A bath can be a serene experience, like the Shikra in the water. Else it can be boisterous with water flying everwhere: for some Comb Ducks, one duck's bathwater is another's drink, apparently!

And finally, the soothing scratch! Here a Silverbill, a Black-necked Stork juvenile, and a Sarus Crane find out the real meaning of the phrase "for every itch, there is a scratch"!

(Photograph information: Skimmer - Etawah district, Apr 9, 2009; Silverbill preening - lucknow, Nov 27, 2008; Shikra - Barabanki, Nov 23, 2008; Comb Duck - Etawah, Apr 9, 2009; Silverbill scratch - Barabanki, Nov 25, 2008; Black-necked Stork - Mainpuri, Apr 7, 2009; Sarus Crane - Etawah, Feb 12, 2009. Thanks to Satish for the scratch-itch phrase!)

Everybody loves a good sun

The Gangetic flood plains can get pretty cold in the winter, and in the early mornings of any season. Sunning is therefore a commonly noticed activity in the myriad life forms here - nothing quite like some temperature to put life back into the frozen bones. Here are a few life-forms doing their thing in the sun.

From top: A Baron butterfly warms up atop a garden plant; the Kachuga turtle suns atop a Gharial that is a fish-eater (something that the turtle obviously knows); a Green Bee-eater and a Greater Coucal open up their feathers to let the sun warm up the darker feathers on their backs.

(Photograph information: Baron - Dec 7, 2008, Rae Bareli district; Turtle-and-Gharial - Jan 18, 2009, National Chambal Sanctuary, Etawah district; Green Bee-eater - Apr 7, 2009, Etawah district; Coucal - Dec 25, 2008, Jaunpur district)

Black-necked Stork allopreening

Remember "allopreening"? One bird preens the other as opposed to itself. See the Munia blog entry for an example. This behaviour has been studied by ornithologists quite a bit and general consensus is that it serves to reinforce bonding and is therefore commonly seen during courtship. Some groups of birds allopreen more than others - Black-necked Storks are not among those that are known to indulge in this behaviour. The photo above shows 4-5 month old Black-necked Stork chicks allopreening. In nearly 8 years of observing this species, this is the first time I saw this behaviour. Chicks in the nest are terribly aggressive to each other as they fight for parents' attention and compete for food. Wonder why they need to indulge in this behaviour after fledging from the nest. (Photo taken in Etawah district, Apr 7, 2009)

Myna hairdo

Mynas are neat birds – with lots of panache, attitude, and smarts. Not to mention hairdo!! This is a brief introduction to some of the styles you can see in the Myna world. The Pied Starling above has the touch-o'-white look; just a dash of old age on the side-burns.

This Common Myna (above) sports the just-been-shocked look.

Nothing like the wavy, wind-swept Harley look – preferred by the Brahminy Starling!

The Punk-and-Judy double-do sets these Bank Mynas apart; for couples only.

The mop-and-dandruff look – errrrrr….

And to end with this intricate centre-parted, backward-brushed, well-oiled, south-Indian, I-am-a-good-Myna look!
(Photographs taken in Sultanpur, Etah, Etawah and Farrukhabad districts between Dec 2008 and Apr 2009)

Fiesty Lapwings

Red-wattled Lapwings are fiesty parents - no other word for it! I watched them use two principal devices to protect nests and chicks from potential predators: "Please-eat-me" and "dive-bombing". Adult lapwings with a brood of newly hatched chicks went into conniptions as a female, very mangy Jackal trotted out into the field they were in. The adults - quite amazingly - sat down in front of the Jackal taking to flight only when the Jackal almost caught them. I watched this pair in Rae Bareli (top photo) successfully lead the Jackal away with this please-eat-me technique. Another parent lapwing literally dive-bombed four Sarus Cranes each roughly 10-times its size when they came too close to a nest that was being incubated. For some reason, the chicks of the year recieved most of the violence (bottom photo) with feathers flying when contact was made. This happened in Etawah. (Photograph dates: top - May 20, 2009; bottom - Apr 11, 2009).