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BIRD BIOLOGY AND BEHAVIOUR (RV)

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Joao

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Wed Dec 07, 2011 12:00 am

Junior Virtual Ranger

Joined: Wed Aug 10, 2005 9:25 pm
Posts: 813
Location: North West wanting to go East

Does the bright blue feathers of some kingfisher species contain any colour pigment?

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Imberbe

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Wed Dec 07, 2011 1:11 am

Senior Virtual Ranger

Joined: Wed Aug 31, 2005 12:28 am
Posts: 14340
Location: Pretoria, RSA

No, the colour is derived from the structure of the feather and the way it reflects light, rather than from some colour pigment.

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Joao

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Wed Dec 07, 2011 1:17 am

Junior Virtual Ranger

Joined: Wed Aug 10, 2005 9:25 pm
Posts: 813
Location: North West wanting to go East

Yes Imberbe you are IT.

The bright blue of the feathers is a result of tyndal scattering. This is where layers of structural keratin that make up the feathers are interspersed with air spaces that reflect particular wavelengths of light to give the blue appearance.

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Rooies

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Mon Apr 23, 2012 12:16 pm

Senior Virtual Ranger

Joined: Wed Jan 10, 2007 3:44 pm
Posts: 2869
Location: Welkom
FAC Member (2012)

Imberbe, you have waited too long to post another question so I am going to take over here

Besides the fact that Pel's Fishing-Owl eats fish, how do they differ from other Owl species?

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micmic

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Tue Apr 24, 2012 6:42 pm

Joined: Tue Jun 02, 2009 12:31 pm
Posts: 26

I'll give it a pirate shot

What does the go-away bird have more than any other bird ?

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Rooies

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Thu Apr 26, 2012 10:27 am

Senior Virtual Ranger

Joined: Wed Jan 10, 2007 3:44 pm
Posts: 2869
Location: Welkom
FAC Member (2012)

Rooies wrote:

Imberbe, you have waited too long to post another question so I am going to take over here

Besides the fact that Pel's Fishing-Owl eats fish, how do they differ from other Owl species?

Not even one guess :!:

The answer is firstly, there is a clear absence of a facial 'disk' because this owl species does not rely on its hearing to detect prey. Secondly, its flight is not silent, because the fish cannot hear it coming.

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micmic

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Thu Apr 26, 2012 9:56 pm

Joined: Tue Jun 02, 2009 12:31 pm
Posts: 26

micmic wrote:

I'll give it a pirate shot

What does the go-away bird have more than any other bird ?

Mine was difficult I guess...

Well, the go-away bird has more chromosomes than any other bird!

Tricky, I know

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oddesy

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Wed May 02, 2012 9:13 pm

Virtual Ranger

Joined: Wed Jan 02, 2008 4:57 pm
Posts: 3426
Location: Randburg, SA

Interesting Micmic :thumbs_up:

how many chromosomes?

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Rooies

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Fri Jun 01, 2012 10:34 am

Senior Virtual Ranger

Joined: Wed Jan 10, 2007 3:44 pm
Posts: 2869
Location: Welkom
FAC Member (2012)

oddesy wrote:

Interesting Micmic :thumbs_up:

how many chromosomes?

Odessy is still waiting for an answer :whistle:

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vinkie

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Sun Jun 03, 2012 1:00 am

Senior Virtual Ranger

Joined: Tue Jun 07, 2011 7:07 pm
Posts: 10335
Location: Living in The Netherlands but raised in South Africa

Normal bird about 74-86 chromosomes
Go-Away bird about 136-140 chromosomes

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Imberbe

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Mon Jul 09, 2012 6:56 pm

Senior Virtual Ranger

Joined: Wed Aug 31, 2005 12:28 am
Posts: 14340
Location: Pretoria, RSA

What is the largest prey item a pearl spotted owl has been documented to take?

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vinkie

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Tue Jul 10, 2012 12:37 am

Senior Virtual Ranger

Joined: Tue Jun 07, 2011 7:07 pm
Posts: 10335
Location: Living in The Netherlands but raised in South Africa

Insects?

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Live life to the edge but be careful not to fall off! :wink:

Finished planning our 2013 trip to South Africa

Satara, Lower Sabie, Hluhluwe, Berg-en-Dal, Lower Sabie, Satara, Elephant Plains(Sabi Sands) all booked & confirmed :dance:

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Imberbe

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Tue Jul 10, 2012 12:55 am

Senior Virtual Ranger

Joined: Wed Aug 31, 2005 12:28 am
Posts: 14340
Location: Pretoria, RSA

A bit larger ...

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PNF

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Tue Jul 10, 2012 7:29 am

Junior Virtual Ranger

Joined: Sun Apr 19, 2009 4:09 pm
Posts: 1717
Location: In the heart of the Waterberg; Deep in Limpopo

A Crowned Lapwing?
Saw something about it the other day.

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onewithnature

Post subject: Re: BIRD BIOLOGY AND BEHAVIOUR (RV)

Posted: Tue Jul 10, 2012 8:11 am

Distinguished Virtual Ranger

Award: Musketeer of the Year, Quiz Whiz of the Year (2011)
Joined: Tue Dec 23, 2008 5:22 am
Posts: 19076
Location: Midway between the infinite and the infinitesimal!
Award: Musketeer of the Year, Quiz Whiz of the Year (2012)

Bats?

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