From the bizarre discoveries file:
The Plover and the Clover can be told apart with ease,
By paying close attention to the habits of the Bees,
For en-to-molo-gists aver, the Bee can be in Clover,
While ety-molo-gists concur, there is no B in Plover.
and this is by Robert Wood, who did early work on the Theory of the Greenhouse.

More like this
Genes Determine Mate Choice, At Least For Fat Tailed Dwarf Lemurs:
This is just frickin' neat: A 56-leaf clover.
Vertical agitation meets
You've probably noticed that people are running around drinking green beer, pinching and kissing one another. Yes, it is St. Patrick's Day. But, the other day was Pi Day.
A1! Would click again.
http://www.gutenberg.org/files/1593/1593-h/images/f-p01a.png
There are a couple of versions of that book kicking around. My wife's parents have a pretty old one. When I was a kid we had what must have been a later edition, with more pages and more wonderful humor. Visiting the in-laws once I picked up their copy and was disappointed not to find some of my favorites.
Aha! I see, the *revised* version is here:
http://www.gutenberg.org/files/33346/33346-h/33346-h.htm
The additions are mostly not birds+flowers, though. For example, The Gnu and the Newt"