"Who are these that fly as a cloud, and as the doves to their windows?"—Isaiah 60:8.

Panorama at Wilson's promontory national park, Australia

http://en.wikipedia.org/wiki/Wilsons_Promontory_National_Park
 
"The glory of the gospel is not that it paints ravens white, and whitewashes blackbirds, but that it turns them into doves. it is the glory of our religion not that it makes a man seem what he is not, but that it makes him something else. It takes the raven and turns him into a dove; his ravenish heart becomes a dove's heart. It is not the feathers that are changed, but the man himself. Glorious Gospel, which takes a lion, and doth not cut the lion's mane off, and then cover him with a sheep's skin, but makes him into a lamb! O church of God! these that have come like doves to their windows are trophies of regenerating grace, which has transformed them, and made them as new creatures in Christ Jesus." CHS- Sermon (No. 63)
http://www.spurgeon.org/sermons/0063.htm