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        Discussion Area °Q½×°Ï >> General ¤@¯ë°ÝÃD >>  Plainer Eggs without Cuckoos¡@¨S¦³§ùÃY¡@¤Ö¤Uªá³J
        
(Message started by: Webcreeper on Dec 20th, 2005, 9:17pm)
Title: Plainer Eggs without Cuckoos¡@¨S¦³§ùÃY¡@¤Ö¤Uªá³J
Post by Webcreeper on Dec 20th, 2005, 9:17pm
3/12/05 New Scientist ­^°ê¡m·s¬ì¾Ç®a¡nÂø»x

Weaver birds let their guard down (http://www.newscientist.com/channel/life/mg18825285.000.html)

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The Original Paper ­ì¨Óªº½×¤å¡G
Evolution of bird eggs in the absence of cuckoo parasitism (http://www.bio.umass.edu/biology/podos/Lahti_Biopage/lahtiPNAS05.pdf)
Title: Re: Plainer Eggs without Cuckoos¡@¨S¦³§ùÃY¡@¤Ö¤Uªá
Post by Jimmy_choi on Dec 23rd, 2005, 1:00pm
That's interesting, I gave a short presentation on cuckoo's parasitic behaviour in my class last month and found that it MAY be possible for birdwatchers to carry out scientific studies on cuckoo's behaviour.

Unlike other behaviour studies, cuckoo's parasitic behaviour study requires very basic techniques. All you have to do is to find the nest with cuckoo's eggs, check the survival rate between host and parasitic youngs. You can also 'make' some eggs yourself and put them into the nest of prospective host, then check the rejection rate. I really encourage those of you who are interested or familiar with woodland birds' nest location, keep an eye on cuckoos and may carry out a study yourself !!
Title: Re: Plainer Eggs without Cuckoos¡@¨S¦³§ùÃY¡@¤Ö¤Uªá
Post by Webcreeper on Dec 23rd, 2005, 1:35pm

on 12/23/05 at 13:00:50, Jimmy_choi wrote:
That's interesting, I gave a short presentation on cuckoo's parasitic behaviour in my class last month and found that it MAY be possible for birdwatchers to carry out scientific studies on cuckoo's behaviour.

Unlike other behaviour studies, cuckoo's parasitic behaviour study requires very basic techniques. All you have to do is to find the nest with cuckoo's eggs, check the survival rate between host and parasitic youngs. You can also 'make' some eggs yourself and put them into the nest of prospective host, then check the rejection rate. I really encourage those of you who are interested or familiar with woodland birds' nest location, keep an eye on cuckoos and may carry out a study yourself !!


Yes, it would be interesting to observe the behaviour and outcome of parasitism. However, please note that all wild birds are protected by the laws of Hong Kong. It is illegal to disturb bird nests, eggs or chicks. Moreover we must not disclose the location of bird nests to anyone who may harm the birds. Disturbance to the covering vegetation may also reveal the location of nests to potential predators.

It is good to raise the right kind of interest in birds among the public. But in doing so we should also highlight how vulnerable they are to human disturbance, and advice seriously against possible adverse effects.


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Title: Re: Plainer Eggs without Cuckoos¡@¨S¦³§ùÃY¡@¤Ö¤Uªá
Post by Jimmy_choi on Dec 23rd, 2005, 6:51pm
oh thanks for reminding me... almost forgotten that important fact in HK....
Title: Re: Plainer Eggs without Cuckoos¡@¨S¦³§ùÃY¡@¤Ö¤Uªá
Post by Webcreeper on Dec 23rd, 2005, 8:01pm
Thanks for your understanding too.

HKBWS do carry out studies on breeding birds, e.g. swallows, swifts, egrets, terns and sometimes woodland birds, but all are limited to observing from a distance. A licence from AFCD will be required if we want to do more, e.g. work on the nests or egges.  ;)


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