Showing posts with label crow. Show all posts
Showing posts with label crow. Show all posts

Sunday, September 18

While waiting for BBS*

*BBS = Backyard Brown Shrike

The garden has been high in bird activity the past few weeks. This is mostly because the rambutan is fruiting, but it's also because the migrant brown shrikes are slowly trickling in. The ripening of the rambutan coincides with the return of these feisty birds leading to the jostling for position and re-drawing of territories for the season.



Probably least concerned with the return of the migrants are the Large-billed Crows. A pair of them always lands on the tree outside our bedroom window in the morning, their loud cawing in dissonance with the pleasant dawn chorus.



At center stage are the lovable green Colasisi, twittering the day away in the rambutan trees.  I have seen as many as 6 individuals on a single tree, slowly picking away at the thick red rind to get to the juicy white flesh of the fruit.

Small quarrels would erupt as they fought for the ripest fruit, or stood guard over their carefully opened treat.  



Joining in the feast are a few shrewd Yellow-vented Bulbuls, on the look out for already opened fruit.  They fly in to enjoy their own feast.




The Colasisi feed most actively during the morning and late afternoon.  At midday, we would hear their soft chirping as they rested. It was almost comical to watch them dropping their heads while falling asleep after their meal, their bellies probably full of the sweet fruit.



Elsewhere in the garden, the Philippine Pied Fantail still rules, its melodious call resonating from every corner. It flies back and forth around the yard, turning with a sharp snap of its wings and graceful fanning of its tail.



The pair of Olive-backed Sunbirds, which occupy the shared corner with the next door yard, are already being bullied by the neighbor's BBS. What can they do but sing loudly from their clothesline perch in protest.



I am certain that the large flocks of Eurasian Tree Sparrows will disperse as soon as BBS arrives, the young ones had better learn quickly to avoid the king when he returns.



True to their less popular name, the Peaceful Doves (Zebra Doves), continue to be placid amidst the haste of the changing season.  They quietly forage in the grass, or preen while perched on branch or electric wire.  Their quiet cooing is only interrupted when they take off, surprised by the slightest of movements.



And the wait for the arrival of BBS continues.





Saturday, September 3

To the (Monfort) bat cave!

Although I've been to Davao City many times, I've never actually made the trip across the strait to the Island Garden City of Samal. Probably because I've always been to Davao on business or as jump off point heading off to somewhere else in Mindanao.  This last time though, we had a free day after arriving from our Mati adventure and before heading back to Manila and I finally got to go.

Of course one of the places on my list to visit  (aside from the beach!), was the Monfort Bat Sanctuary in Barangay Tambo.  This private establishment holds the world's largest known population of Geoffroy's Rousette fruit bats roosting in caves scattered around the property.


Geoffroy's Rousettes Fruit Bats!

Adri and I had recently seen an impressive colony of Geoffroy's Rousettes on Danjugan Island.  But that turned out to be a tiny community compared to the over 2 million bats estimated to be living at Monfort!


Welcome to the Island Garden City of Samal!

It was still early when we arrived: our group (Alex, Tere, Mel, Mark, Adri and me) was the first for the day.  Upon entering we paid the fee (a hundred pesos per adult).  We were on our way to the reception area to meet our guide when we were immediately stopped by the sight of a Brahminy Kite and a Large-billed Crow in a mid-air skirmish!


Aerial battle! Crow versus Kite!

We all watched, entertained by the back and forth retaliation of the 2 birds, and wondering what the quarrel was about.  


Crow chasing the Kite!

Or is it Kite chasing the Crow?!?




The engagement lasted several minutes before they finally flew out of our view behind the trees. So, back to the bats...


Lots of informative posters and photos.
There were a lot of informational posters and signage everywhere about the bats and the history of the sanctuary.  It was very interesting to read the material and look at the photos, but our guide was soon ready to give us a brief orientation and lead us...

To the batcave!!!  (yes, of course, cue the 1960's Batman TV series music theme here)

Cave number one: already pretty impressive. There were several more!

It was actually an underground system of several caves which the bats roosted in. Although you could approach quite near without disturbing the bats, bamboo fences were thoughtfully put up to remind visitors not to come too close to the resting animals.


It was easy viewing, and a bamboo fence reminded everyone to keep their distance.
After all, it was daytime and the nocturnal bats were resting.

Hundreds and hundreds of bats could be seen roosting on the outer walls of the caves and as far back as you could peer inside the caverns.


No personal bubble requirement for bats, I guess.

Many of the bats were asleep, some were busy grooming themselves while some were even flying around.


You have to admit they looked pretty adorable.

There was the distinctive smell of guano wafting from the caves, but it wasn't so bad if you were upwind.

Our guide mentioned that each of the caves housed a specific population of bats: one cave had mostly young bats, another had mostly pregnant and nursing bats and yet another had senior citizen bats.



Each cave had a specific bat demographic occupying it!

It was almost mesmerizing to watch the bats pack the walls of the cave at such a high density.  It must be a great sight to see them leave the roost at sundown!





Just hanging out. How can you sleep?!?

At one of the caves, we even spotted a large rat crawling on a blank, unoccupied area of the wall! It was sniffing its way up the wall, right side up, long tail and wingless! Not blending in at all and yet the bats paid it no obvious attention.


Wait, that's no bat!

We were asked to look out for young bats still clinging to their mothers.  With our binoculars, we easily spotted one, and later, several of the young bats!


Mother and child:  aaaaw.

They were easier to spot when we realized that, aside from their tinier size, they were grayer in color. We also noticed and that, while clutching their mom by their feet, they would be flapping their pale wings in an effort to position themselves better to suckle at mom's milk or to sleep tucked in tight under her wings.




Many of the young ones were quite restless and kept flapping their wings.

We got a glimpse of how important it was for the babies to hang on tight to mom. One of the large-billed crows was hanging out on the bamboo fences, looking down at the bats thoughtfully.


This crow's up to no good. (You can almost imagine a thought bubble above its head!)

Suddenly it dove in to the hole!  What was it up to?!?  It came up from the cave's interior and perched again on the bamboo fence, still looking at the bats.

On a second dive, it flew up to a mango tree carrying a baby bat! We could clearly see the baby bat flailing in the crow's beak. Eventually, the crow flew up to a higher branch and held down the bat with its claws. We could see it picking at the bat in its feet, but the large branch thankfully obscured the more gory details.



Oh no!  Poor little baby bat!
(bottom- Adri got a better view and photo compared to mine- top)

Our guide explained to us that this predation by crows was quite common!  Despite the grisly situation, it was pretty interesting that we were able to witness this "nature is red in tooth and claw" event. Other common predators were pythons (we didn't see any!) and rats (so that was what that fellow was up to!).

As we took one last look at the bats, we noticed even more young bats in the colony.  They looked especially fragile now, after we had witnessed the violent demise of one them.  Still, our guide had mentioned that the population of this colony has increased significantly in the past few years. 


There were many more babies!

The Monfort Bat Colony made it to the Guiness Book of World Records in 2010 as the largest colony of Geoffroy's Rousettes Fruit Bats, and it had surprised scientists by having such a large number of pregnant bats even outside the known breeding season!  The protection given to these bats is in stark contrast to many other colonies which are often persecuted by hunting for food or harvesting of their guano. 


Bats are friends... not food!

It is great to see the efforts of the Monfort Bat Sanctuary to protect and promote this important species.  After all, fruit bats are important pollinators and seed dispersers. Where better to appreciate the Geoffroy's Rousettes than in a region known for tropical rainforests and fruit production (did I hear someone say durian?)!




Saturday, February 6

Balcony birding

Most days were cold and grey,
Work-related trips out of the country are a dilemma for me birding-wise.  I always hope that, despite a packed schedule, I would have a chance for even just a bit of birding. My latest trip to Nara in Japan was no different.

I spent 8 full days on campus, but my schedule offered little time to go birding, having lab rotations scheduled the entire day.  I did have the weekend free, but since it was my first time in Japan, I opted to see the sights and experience the culture, rather than do a birding trip.  I also had a hard time dealing with the temperature, it was my first winter and the region just happened to experience a cold snap a couple of days after I arrived!

But, I did get a bit of birding done, and a few lifers: from my balcony!  I could have taken short morning walks around campus, but with my official workday beginning at 930am, and with temperatures too cold (-3 degrees Celsius was too cold for me to even think of leaving my warm room) for my tropical temperament, the best I could do was watch birds from the small terrace outside my room. It spanned the view from east to west across campus, and I was on the 4th floor, high enough to espy even birds perched on top of the buildings.

The dorm buildings to the east.

School buildings in directly in front.


And the sunset and more buildings (plus a tennis court) on the west,

Thanks to my Japanese birder friend from the Wild Bird Society of Japan, Asuka-san for giving  me a small Japan field guide last year.  It was very useful, and beautifully illustrated by Taniguchi-san (whom I met during the Philippine Birdfest last December in Balanga), I was able to identify all the birds I saw, even if the field guide was in Japanese! (At least I hope I did!)
My handy pocket field guide from the WBSJ!

Easily the most common and most visible birds were the Brown-eared Bulbuls. They pretty much owned the entire frontage of the guesthouse, chasing away most other birds. They kept careful watch over a tree laden with blue fruit, enjoying their feast every morning.  Their loud calls could be heard on campus all day.




Brown-eared Bulbul


The second most common would be the Jungle Crow.  I would hear them cawing as crows would, but it was only later that I was able to identify which species was common in Japan.


Jungle Crow

The first bird I actually noticed on campus was not a lifer for me.  White Wagtails were quite common, walking on the grassy fields and on the roads and paths. There were often two or even three of them together bouncing their behinds actively.  I tried hard to remember Richard's lessons of subspecies from the Laoag wagtails, but failed to identify them on the spot.



White wagtails

Another familiar bird was a male Blue Rock Thrush I would see everyday. It was quite handsome and not shy at all.  It was one of the birds the Brown-eared Bulbuls would tolerate having around for long periods of time.


Blue Rock Thrush

Also around every morning, but often quite a distance away were a few Dusky Thrushes. They were very handsome birds, not as noisy or active as the bulbuls, and often perched on the branches for long periods of time or foraging on the ground.



Dusky Thrush

Very common were several big, fat Rock Doves, on the ground or perched on top of the buildings or outside windows.


Feral Rock Doves

I was pleasantly surprised to spot a juvenile Japanese Grosbeak twice during my stay.  Again it was perched quite a distance away, but it showed itself well the first time, staying out in the open on bare branches.


Japanese Grosbeak

Japanese White-eyes would twitter a familiar sound as they moved about in the foliage and transferred from tree to tree.


Japanese White-eye

I had also spotted  a Japanese Tit one afternoon, but I wasn't able to take a photo of it.

And of course the Eurasian Tree Sparrows were  also daily visitors, not as common as back home though. And quite fluffed up all the time so they appeared much more... rotund... than usual.


Eurasian Tree Sparrow

Every now and then, a small flock of White-cheeked Starlings would attempt to intrude on bulbul territory, but they would quickly be chased away.


White-cheeked Starling

So those were my regular visitors I could enjoy every morning on my balcony.  I did see other birds on campus, my favorite being a female Daurian Redstart just outside our building.  Too bad I didn't have my camera with me!  It was sooo cute!  I knew right off it was some kind of flycatcher and the white wing patch helped me with the ID.


ID'ing the Daurian Redstart

Another lifer was a Meadow Bunting, which I saw while walking behind the dorm buildings to a nearby convenience store.  I would have never been able to identify it if i didn't have my pocket point-and-shoot with me.  Not a great photo, but it served its purpose.


Meadow Bunting

The 10 days passed quite quickly, of course the days began to warm to a comfortable 6 -7 degrees towards the end of my stay.  I'm quite sure there were other birds I caught a glimpse of which I was unable to identify or even observe closely, and I wish I had more chances to go birding. Glad to have gotten a few lifers though on this work trip, even if it was just from my balcony!


My balcony's the top floor middle one.


(I do hope I got all the IDs correctly!  I would welcome corrections from more experienced birders!)