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Many birds that form flocks compete through aggressive

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SVP
SVP
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Joined: 05 Apr 2005
Posts: 1712
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Kudos [?]: 79 [0], given: 0

Many birds that form flocks compete through aggressive [#permalink]

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New post 30 May 2005, 23:03
Many birds that form flocks compete through
aggressive interaction for priority of access to
resources such as food and shelter. The result of
repeated interactions between flock members is that
(5) each bird gains a particular social status related to its
fighting ability, with priority of access to resources
increasing with higher status. As the number and
intensity of interactions between birds increase,
however, so increase the costs to each bird in terms of
(10) energy expenditure, time, and risk of injury. Thus,
birds possessing attributes that reduce the number of
costly interactions in which they must be involved,
without leading to a reduction in status, are at an
advantage. An external signal, such as a plumage type,
(15) announcing fighting ability and thereby obviating the
actual need to fight, could be one such attribute.
The zoologist Rohwer asserted that plumage
variations in “Harris sparrowsâ€
Director
Director
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Joined: 01 Feb 2003
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Location: Hyderabad
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 [#permalink]

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New post 30 May 2005, 23:33
Looks like I would have made more mistakes than I should!
Total Time: 13 min
Time to read: 3 min
first, second and third questions: 2 min each (rest I didn't record)
Answers:
1 B
2 A
3 B
4 B
5 E
6 D
7 A
SVP
SVP
User avatar
Joined: 05 Apr 2005
Posts: 1712
Followers: 5

Kudos [?]: 79 [0], given: 0

 [#permalink]

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New post 31 May 2005, 19:28
Anymore???????????????????????? :P

May be because of long passage, most are not interested.
  [#permalink] 31 May 2005, 19:28
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Many birds that form flocks compete through aggressive

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