Don't have any mallard pics posted to my blog either.
Here's the couple:
Quack, quack, quack:
In flight (not very good, but I'll post anyway):
UPDATE: 23 May 10
More, different views of the mallard.
Same place, maybe not same duck.
These were taken with the XSi and tele, so a little closer. I did some layer masking to sharpen duck and soften background a little more.