A few questions

[Kiran Krishna <>]

A few questions have been floating around in my mind these past few weeks.
My knowledge of biology is rudimentary. That said, here they are:

1)How does one distinguish between two species and two races of the same
species of birds? For example, classification of butterflies is, I think,
done on the basis of genitalia.

2)Has there been/are there any studies being done on the control of
non-native species of birds (eg Common Myna) in Australia? 

3)Occasionally, even now, there are some non-native birds being set free.
Have there been recent studies of the effects of these releases?

I would be grateful for any answers. 

Cheers!
                        yours
                             Kiran

http://www.physics.usyd.edu.au/~kiran

http://www.physics.usyd.edu/hienergy

Birding-Aus is on the Web at
www.shc.melb.catholic.edu.au/home/birding/index.html
To unsubscribe from this mailing list, send the message
"unsubscribe birding-aus" (no quotes, no Subject line)
to