I looooooove herons. We've many, many, many of them in California...
One of my favorite photos by me - who knows where it is now - is of a large number of snowy egrets in and on a blooming Erythrina caffra tree.
I'll just show a typical blooming Erythrina here, and leave the bird group to your imagination...
Image from Wikipedia, under 'herons'
Some Erythrinas here (E. coralloides, in this case, I think) -
http://www.calliebowdish.com