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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Tue May 29, 2012 12:13 pm 
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Virtual Ranger
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:thumbs_up: Gryskopvisvanger!

10/10 for me too :dance: :dance: (the "twists" almost got me this time :lol: )


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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Tue May 29, 2012 12:17 pm 
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Dabchick :clap: :clap: :clap: well done.


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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Tue May 29, 2012 12:51 pm 
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Gryskopvisvanger wrote:
10/10 for me :dance: :dance: :dance:

Dabchick wrote:
:thumbs_up: Gryskopvisvanger!

10/10 for me too :dance: :dance: (the "twists" almost got me this time :lol: )


I am not even close to be calling myself a birder, however I was also lucky this week with 10/10 :D . Congratulations to both for getting 100% :clap: :clap: .

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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Tue May 29, 2012 1:42 pm 
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Junior Virtual Ranger
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9/10 for me. Congratulations to all the full marks! Well done!


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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Tue May 29, 2012 1:56 pm 
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Congratulations to all you clever 'mites scoring 100%! :mrgreen: :clap: :clap: :clap:

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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Tue May 29, 2012 3:50 pm 
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9.5/10 for me (with a little help from a friend). Got disastrously sidetracked with one of the Twister answers :redface: :lol:
Now for the Duckling challenge! :hmz:


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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Tue May 29, 2012 10:39 pm 
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Junior Virtual Ranger
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My first 'full house'! :dance: :dance: Thankyou Johan. :clap: :clap: . Very pleased with myself. Looking forward to the next challenge. Well done to everyone else who did well with this challenge.


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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Wed May 30, 2012 7:01 pm 
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Legendary Virtual Ranger
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:redface: sorry I'm not ready...
I will do the next one :?

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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Wed May 30, 2012 9:12 pm 
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:clap: :dance: :clap: :dance: Well done all you clever mites! :clap: :dance: :clap: :dance:

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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Thu May 31, 2012 3:15 pm 
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Legendary Virtual Ranger
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Award: Sighting of the Year - Birds (2013)
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Award: Birder of the Year (2012)
This is the results of challenge #21 of 2012. Too easy! Overall the challenge returned an average score of 86.5%

We had 20 ‘mites taking part.

The results are as follows:
Two ‘mites scored 6;
one ‘mites scored 7;
three ‘mites scored 8;
ten scored 9;
and four ‘mites got all the answers right.

Thanks again to those 'mites who so diligently add explanatory notes with their IDs. :clap: :clap: :clap:

Image

#1 – African paradise-flycatcher [18] . Not many ‘mites got caught here.

Image

#2 – Gabar Goshawk [16] pantera leo points out the salient features: Overall barred appearance combined with the red legs and cere. There's also a white trailing edge visible on the secondaries which is another good pointer for this species.

Image

#3a – Lesser Honeyguide [19] . Unfortunately if you didn’t get the honeyguide, you would obviously battle with the brood parasite questions. To me it was very pleasing to see so many ‘mites get this ID right.
#3b – Yellow-fronted Canary [19] . Not much trouble here…

Image

#4 – South African shelduck Male [19] . Everyone got this ID.

Image

#5 – Swee Waxbill female [18] . Another easy one.

Image

#6 – Spotted Eagle Owl (rufous form) [13] . This was the toughest ID challenge and again you guys and gals did very well in making a tough call. Mutorashanga says the supporting features were yellow eyes, plumage appearing to be grey rather than brown... The orange eyes of a Cape eagle-owl leans towards the red end of the scale while the rufous form spottie’s eyes are strictly speaking also orange, but on the yellow end of the scale. Although a tough feature to use here because of the limited view that can only just be detected; the under-wing pattern for a Capey is much lighter than for the spottie whose dark under-wing bars are much broader

Bonus points:

Q#1 – From the birds featured above, which is a brood parasite?

The honeyguide. [/b][/color] [19]

Q#2 – What is the survival tactic used by these birds to ensure their sole survival in a nest?
davejenny quotes from Beat About the Bush - Birds :The chicks of Honeyguides have specialised hooks on the end of their mandibles used to attack and kill the host siblings in the nest in which it has hatched

Some ‘mites also metioned that the honeyguide mother ensures her chick hatches first by internally incubating the egg for an extra day before laying it, so it has a head start in development compared to the host. This is, however, not the whole story, as she must observe the host to make sure that she does not lay her eggs in a nest with a clutch of eggs that are just about to hatch. The ability to move around for a whole day with an egg ready to be laid when the right conditions are found, that is the real advantage! [17]

Q#3 – Which of the featured birds maintain a crèche where the young from multiple broods (of different parents) are cared for by one or more adults?

Shelduck [13] hilda wrote : Within days of hatching, the young are led from the nest to 'nursery water' by both parents or sometimes by other adults. This distance can be a kilometre or two! In the nursery there are several young from other shelducks together under the care of one or more adults. The nursery group (or crèche) varies in size and age range (a normal size crèche is 20-40 individuals, but some groups of 100 have been recorded). Scientists believe the nursery supervisors are failed breeders or non-breeders.

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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Thu May 31, 2012 3:26 pm 
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Virtual Ranger
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:lol:

That lesser honeyguide... well, it was a grey-headed sparrow on my list (even though I was a bit bothered about the white above the bill and the shade of brown of the wings) until I couldn't find the brood parasite :evil: , which finally made me look through the book for alternatives! :lol:



next one... :popcorn:


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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Thu May 31, 2012 4:06 pm 
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Thanks Johan.
Well we were one of those mites that only got 6 points, (the honey guide being our problem) and then could not get any of the questions right, but at least we got 6 ID's correct, so I am thrilled :dance:

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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Thu May 31, 2012 4:56 pm 
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Virtual Ranger
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I think I need a colour chart to tell yellow from orange!!!! My coin was faulty again :evil:


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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Thu May 31, 2012 9:20 pm 
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Joined: Thu Apr 26, 2012 11:22 pm
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Location: Bela-Bela, Limpopo
Thank you Johan.
:evil: Got stumped by the kids in the creche! :slap:
Next time!

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 Post subject: Re: Bird ID Challenge.
Unread postPosted: Fri Jun 01, 2012 6:47 am 
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A lesson learnt for the 100th time - always stick to your first choice! :wall: If I did what I know so well, I would have scored 100% for the first time. But no, I doubted, and changed it to Cape Eagle Owl, because I couldn't decide whether the eyes are yellow or orange! :(

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