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BIRD BIOLOGY AND BEHAVIOUR (RV)

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Thu Jul 24, 2008 11:21 pm Unread post
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?
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Fri Jul 25, 2008 6:44 am Unread post
Birds are meant to have evolved from fish, so would it not have been the fins?



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Fri Jul 25, 2008 7:57 am Unread post
Birds evolved from dinosaurs and the feathers are from the scales .



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Fri Jul 25, 2008 8:02 am Unread post
oopsie, yes :redface:

we are from the fish :wink:



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Fri Jul 25, 2008 10:45 am Unread post
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:



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Fri Jul 25, 2008 11:15 am Unread post
Do you mean reptiles ?
Dinosaurs were also reptiles (Archeosauria ) , and the Crocodiles are still around.



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Fri Jul 25, 2008 1:27 pm Unread post
Birds didn't evolve nor did birds feathers :shock:



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Fri Jul 25, 2008 1:39 pm Unread post
For the ones not reading my posts in the Birding topic :twisted: . Yet, I still don't know what you mean Imberbe.

:lol: :lol:



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Fri Jul 25, 2008 3:28 pm Unread post
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.



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Fri Jul 25, 2008 4:16 pm Unread post
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:



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Tue Jul 29, 2008 11:29 am Unread post
:yaya:



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Fri Aug 01, 2008 1:56 pm Unread post
What are the Accipiter hawks and which features distinguish them ?



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Fri Aug 01, 2008 3:00 pm Unread post
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



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Mon Aug 04, 2008 6:47 am Unread post
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.



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Mon Aug 04, 2008 8:47 am Unread post
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:
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