Skip to content

SANParks.org Forums

View unanswered posts | View active topics






Post new topic Reply to topic  Page 1 of 93
 [ 1386 posts ]  Go to page 1, 2, 3, 4, 5 ... 93  Next
Author Message
 Post subject: BIRD BIOLOGY AND BEHAVIOUR (RV)
Unread postPosted: Thu Jul 24, 2008 11:21 pm 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar

Joined: Wed Aug 31, 2005 12:28 am
Posts: 14136
Location: Pretoria, RSA
This is a revolving quiz about bird biology and behaviour!

The first person who asks an identification question will get fired! (I know your boss!) :twisted:

(If you like that idea ... I will speak to him about terminating your possibility of retirement!)


From what, is it thought, have birds feathers evolved?

_________________
Imberbe = Combretum imberbe = Leadwood = Hardekool = The spirit of the Wildernis!

Want to know more about the SANParks Honorary Rangers? Visit www.sanparkshr.org


One positive deed is worth more than a thousand critical words.


Top
 Profile  
 
 Post subject:
Unread postPosted: Fri Jul 25, 2008 6:44 am 
Offline
Legendary Virtual Ranger
Legendary Virtual Ranger
User avatar

Joined: Tue Jun 07, 2005 8:47 pm
Posts: 10426
Location: meandering between senility and menopause
FAC Member (2013)
Birds are meant to have evolved from fish, so would it not have been the fins?

_________________
The bird doesn't sing because it has answers, it sings because it has a song.


Top
 Profile  
 
 Post subject:
Unread postPosted: Fri Jul 25, 2008 7:57 am 
Offline
Virtual Ranger
Virtual Ranger
User avatar

Joined: Tue Nov 30, 2004 12:08 pm
Posts: 491
Location: GAUTENG , S.A.
Birds evolved from dinosaurs and the feathers are from the scales .


Top
 Profile  
 
 Post subject:
Unread postPosted: Fri Jul 25, 2008 8:02 am 
Offline
Legendary Virtual Ranger
Legendary Virtual Ranger
User avatar

Joined: Tue Jun 07, 2005 8:47 pm
Posts: 10426
Location: meandering between senility and menopause
FAC Member (2013)
oopsie, yes :redface:

we are from the fish :wink:

_________________
The bird doesn't sing because it has answers, it sings because it has a song.


Top
 Profile  
 
 Post subject:
Unread postPosted: Fri Jul 25, 2008 10:45 am 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar

Joined: Wed Aug 31, 2005 12:28 am
Posts: 14136
Location: Pretoria, RSA
A little hint. Birds are actually still part of that grouping though very few people realise it. (Birders would die a thousand deaths if they realise it.) It is a group that is alive and well and not only living beneath water. :wink:

_________________
Imberbe = Combretum imberbe = Leadwood = Hardekool = The spirit of the Wildernis!

Want to know more about the SANParks Honorary Rangers? Visit www.sanparkshr.org


One positive deed is worth more than a thousand critical words.


Top
 Profile  
 
 Post subject:
Unread postPosted: Fri Jul 25, 2008 11:15 am 
Offline
Virtual Ranger
Virtual Ranger
User avatar

Joined: Tue Nov 30, 2004 12:08 pm
Posts: 491
Location: GAUTENG , S.A.
Do you mean reptiles ?
Dinosaurs were also reptiles (Archeosauria ) , and the Crocodiles are still around.


Top
 Profile  
 
 Post subject:
Unread postPosted: Fri Jul 25, 2008 1:27 pm 
Offline
User avatar

Joined: Fri Nov 04, 2005 3:57 pm
Posts: 111
Location: Rondebosh Cape Town
Birds didn't evolve nor did birds feathers :shock:


Top
 Profile  
 
 Post subject:
Unread postPosted: Fri Jul 25, 2008 1:39 pm 
Offline
Legendary Virtual Ranger
Legendary Virtual Ranger
User avatar
Award: Birder of the Year (2013)
Joined: Thu Dec 02, 2004 10:27 am
Posts: 5250
Location: Chasing down the rarities
For the ones not reading my posts in the Birding topic :twisted: . Yet, I still don't know what you mean Imberbe.

:lol: :lol:

_________________
656
Latest Lifer(s): White-winged Flufftail, Dickinson's Kestrel, Senegal Coucal, Three-banded Courser, African Broadbill, Thrush Nightingale, Rufous-bellied Heron.

Follow me as I bird on Twitter @wildtuinman


Top
 Profile  
 
 Post subject:
Unread postPosted: Fri Jul 25, 2008 3:28 pm 
Offline
Senior Virtual Ranger
Senior Virtual Ranger
User avatar

Joined: Sun Jan 20, 2008 2:52 pm
Posts: 3397
Location: Africa's Largest City
Is this the answer? Copied and pasted from this web site:
http://www.nurseminerva.co.uk/adapt/feathers.htm

The precursor of a feather may have been a conical papilla developed from a cylindrical follicle within the skin. In the next stage, the papilla becomes a tuft of unbranched filaments (barbs), and then each filament becomes branched (barbules). At some point the branched filaments appear to have become organised around a central stem (rachis) to produce the pennate arrangement of present-day feathers.

_________________
"In the end we conserve only that which we love, we love only that which we understand, we understand only that which we are taught"
(Baba Dioum, Senegalese Ecologist)


Top
 Profile  
 
 Post subject:
Unread postPosted: Fri Jul 25, 2008 4:16 pm 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar

Joined: Wed Aug 31, 2005 12:28 am
Posts: 14136
Location: Pretoria, RSA
mikev wrote:
Do you mean reptiles ?
Dinosaurs were also reptiles (Archeosauria ) , and the Crocodiles are still around.


Yes, I was just being a little difficult, to make this fact plain.

Birds are actually merely a sub division of the broader reptile grouping. They are closer related to some reptiles, than other reptiles are. e.g. Crocodiles are closer related to birds than to monitors.

And yes, it is thought that feathers evolved from reptile scales.

mikev you're IT! :clap:

_________________
Imberbe = Combretum imberbe = Leadwood = Hardekool = The spirit of the Wildernis!

Want to know more about the SANParks Honorary Rangers? Visit www.sanparkshr.org


One positive deed is worth more than a thousand critical words.


Top
 Profile  
 
 Post subject:
Unread postPosted: Tue Jul 29, 2008 11:29 am 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar

Joined: Wed Aug 31, 2005 12:28 am
Posts: 14136
Location: Pretoria, RSA
:yaya:

_________________
Imberbe = Combretum imberbe = Leadwood = Hardekool = The spirit of the Wildernis!

Want to know more about the SANParks Honorary Rangers? Visit www.sanparkshr.org


One positive deed is worth more than a thousand critical words.


Top
 Profile  
 
 Post subject:
Unread postPosted: Fri Aug 01, 2008 1:56 pm 
Offline
Virtual Ranger
Virtual Ranger
User avatar

Joined: Tue Nov 30, 2004 12:08 pm
Posts: 491
Location: GAUTENG , S.A.
What are the Accipiter hawks and which features distinguish them ?


Top
 Profile  
 
 Post subject:
Unread postPosted: Fri Aug 01, 2008 3:00 pm 
Offline
User avatar

Joined: Fri Nov 04, 2005 3:57 pm
Posts: 111
Location: Rondebosh Cape Town
Sparrow- and Goshawks

- Females are larger than males
- Slender built with long legs and a long tail
- Short broad rounded wings
- Long sharp talons with a sharp hooked bill
- Flight pattern is a series of flaps followed by a short glide


Top
 Profile  
 
 Post subject:
Unread postPosted: Mon Aug 04, 2008 6:47 am 
Offline
Virtual Ranger
Virtual Ranger
User avatar

Joined: Tue Nov 30, 2004 12:08 pm
Posts: 491
Location: GAUTENG , S.A.
Sonbessie, correct , you may take over the questioning please .

If I may add

- unfeathered legs .

- they specialize in preying on small birds and mammals in swift pursuit from a standing start.


Top
 Profile  
 
 Post subject:
Unread postPosted: Mon Aug 04, 2008 8:47 am 
Offline
User avatar

Joined: Fri Nov 04, 2005 3:57 pm
Posts: 111
Location: Rondebosh Cape Town
Which weaver, unlike other weavers, flies straight into the nest from a distance away, or a neighbouring tree, without first perching near the nest. :lol:


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1386 posts ]  Go to page 1, 2, 3, 4, 5 ... 93  Next



Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group

Webcams Highlights

Addo Nossob Orpen Satara
Addo Nossob Orpen Satara
Submitted by Jurie van Vuuren at 12:26:03 Submitted by Stampajane at 07:13:32 Submitted by Stampajane at 19:37:35 Submitted by ShapeShifter at 12:01:14