Archive for the 'Bird Behaviour' Category

A very obliging bird is the Reedwarbler

Clamorous Reed-Warbler, Canberra

Clamorous Reed-Warbler, Canberra

2007 Australian Capital Territory trip report #5

In my experience the Clamorous Reedwarbler of Australia is not an easy bird to photograph. They tend to skulk around in the reeds on the edges of lakes, creeks, rivers, swamps and ponds. My usual experience with this species is to see them dart rapidly from one clump of reeds to another. When they do show themselves in the open, the pose is kept for about two seconds – if you are lucky.

I had previously obtained a really nice shot of this species at the Cleland Wildlife Park near Adelaide. That shot was of a captive bird in a walk-through aviary. It was used to hundreds of people within a metre or two every day of the year.

While we were enjoying an ice cream during our visit to Floriade 2007 in Canberra I heard a reedwarbler in the reeds nearby. I casually walked to the water’s edge, prepared the camera and waited about ten seconds. Out popped the bird, posed long enough for me to focus and then flew off.

I guess he was a little cheesed off with everyone taking thousands of photos of flowers.

He just wanted his moment of glory too.

Now if only I could get a photo of another secretive reed-dwelling bird, the Little Grassbird.

Floriade 2007, Canberra

Floriade 2007, Canberra

New Holland Honeyeaters breeding

One of my readers left the following comments and question on a post from last year about New Holland Honeyeaters:

We’ve been watching a pair of New Holland Honeyeaters building their nest in an ornamental tree in our courtyard in Kensington (SA). Really been lovely to watch them.
Do they stay together as mates?

That is a very good question Tony. It is one I hadn’t given all that much thought to, so I had to do my research.

Leave them in peace:

It is indeed a great delight to watch birds nesting and as they go about feeding the young. The urge to breed is very strong and they will tolerate people going about their daily lives only metres away. If you have birds nesting in your garden, try not to disturb them too much.

Breeding behaviour:

The pair that have mated and built the nest will generally feed the young together. In some bird species only the female sits on the eggs and feeds the young while the male defends the territory (for example, Australian Magpies). In other species the whole thing is a cooperative affair. With the Australian Fairy-wrens for example, the whole extended family will build the nest and feed the young.

Monogamous pairs:

As far as New Holland Honeyeaters are concerned they tend to breed in monogamous pairs; they stay together as mates for the entire breeding cycle. They will often breed several times in a season. If still alive the next breeding season they will also bond together again as a pair.

Again, my thanks to Tony for a great question.

Further reading:

New Holland Honeyeater

New Holland Honeyeater

Pesky plovers – dealing with swooping birds

Dealing with swooping birds is a topic that arises very frequently in newspapers, on television and on birding forums. During the spring here in Australia, our main bird breeding season, there are numerous complaints from people about aggressive birds. Most of these relate to Australian Magpies. The male aggressively defends the nest. Sometimes contact is made with the unfortunate person and blood is drawn. My own sister-in-law had a terrifying experience like this as a child.

A question from a worried reader:

I recently had a request for help from a reader concerning her children being attacked by plovers (Masked Lapwings). Here is what she said:

My 4 children (5, 7, 9 and 11) were attacked this morning by a group of plovers (a few pairs)they all have young at the moment. They were on their way to the bus stop and the plovers separated the children and were swooping and dive bombing them. They arrived back home shrieking and crying they were so unsettled by the experience. Having come on the internet to see what to do, I have read that they usually do not attack groups. 2 of my children lay on the ground to show they were not hostile. We do not have an alternate route to take. Any ideas on what we can do?

Masked Lapwing

Masked Lapwing

Terrifying:

The experience must have been truly terrifying to the children. I have recently been bombed by a plover while walking near my home. This pair didn’t have young nearby but may have had a nest somewhere. It certainly unnerved me – and they only came to within about 3 metres.

Masked Plovers:

Swooping plovers (lapwings) are a common problem throughout Australia. Rarely do they cause harm by actual contact but this has been known to happen. The spur on the wing has been known to inflict scratches. As your children discovered the unsettling nature of such an attack is just as traumatic as actual contact causing harm.

They have been known to attack in small groups but more commonly just the one pair attacks. The behaviour should stop after the breeding season is over.

Possible solutions:

I do not know of any fool proof system of solving your dilemma. Perhaps the children could wear cycling helmets to minimise any potential damage if struck. (This is an expensive solution if they do not have helmets.)

A cheaper alternative might be for the children to each carry a 50cm stick with a flag tied to the top – say a piece of cloth. Hold the stick above the head as the attack occurs. (This method works with magpies – I haven’t tested it with plovers).

Either solution does not take away the problem of the frightening noise made by the birds during an attack. The children may still be very unnerved even with some form of protection.

I am sorry that I do not know a better solution.

Over to my readers:

Perhaps my readers may be able to suggest a better solution. Leave your ideas in the comments below. COMMENTS ARE NOW CLOSED.

Further reading:

UPDATE: Readers of the Birding-Aus newsgroup have contributed many ideas and comments on this problem. Read their suggestions in the comments section below.

UPDATE: Due to some comments suggesting illegal action on this article, comments are now closed. Sadly some people cannot seem to understand our laws relating to native birds.

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Clever Crows are no Bird Brains

I’ve always known that crows and ravens were clever birds. They can be downright cunning at times. From a very early age growing up on a farm I was aware of their sneaky habits of flying into the chook yard to steal the eggs.

Over the years I’ve read further examples of these clever birds using tools to get to their food. Some of these indicators of intelligence have been filmed and shown on television. A more recent research programme has demonstrated an intelligence far beyond what was previously thought possible. The following quote comes from The Australian newspaper.

LONDON: Crows, famous for using tools, have even more impressive brains than previously thought.

Seven New Caledonian crows retrieved an unreachable snack with a stick, which first had to be obtained using a shorter stick.

This “metatool” use requires levels of intelligence and reasoning only seen before in humans and great apes.

It may have allowed humans to use simple stone tools to fashion more complex ones.

The new evidence shows a level of understanding similar to that of chimpanzees and orangutans.

University of Auckland scientists placed a meat treat out of the crows’ reach in a 15cm-deep hole. Nearby were two “toolboxes” with vertical bars through which the birds could insert bills, but not their heads.

A stick long enough to fish the meat from the hole was in one toolbox, but too far behind the bars for the crow to reach. The other toolbox contained a stone in the same position.

In front of both boxes lay a stick too short to extract the meat, but capable of reaching the long stick.

All seven crows worked out how to get the long stick and extract the meat.

Further reading:

Unusual cormorant behaviour

On my recent visit to Loxton in the Riverland region of South Australia I saw about 50 Little Black Cormorants. They were across the other side of the river. Every few seconds about 10-15 of the assembled birds would start madly flapping and splashing the water. They were not diving for fish and remained on the surface throughout the five to ten second splashing routine.

What were they doing?

I’ve never seen this behaviour in cormorants before. I’m at a loss to explain their behaviour. I invite readers to leave their explanations in the comments section below, or use the email contact form here.

Little Black Cormorants, River Murray, Loxton

Little Black Cormorants, River Murray, Loxton

Click on the photo to enlarge the image.

Apart from the bird on the far left, I didn’t manage to catch the splashing action on my camera. [Sigh]