I mentioned in a study that I wrote earlier this year that I had three Ringneck doves as pets (see the Fact Finder question below; the study "Christian Doves" has a picture of them). I say "had" three Ringneck doves because I now have four of them - two of them have produced another. Although fast growing (the new addition went from about 1/2 the size of my thumb at hatching to the "handful" shown in the picture in less than 2 weeks), doves, whether infants or adults, are very innocent when it comes to danger. They would seemingly not survive very long in an area where there are many predators - or, they would not survive very long, without a defender, in an area where there are many predators. That is perhaps the primary lesson in Christ's reference to them:
"10:16 Behold, I send you forth as sheep in the midst of wolves: be ye therefore wise as serpents, and harmless as doves ... 10:19 But when they deliver you up, take no thought how or what ye shall speak: for it shall be given you in that same hour what ye shall speak. 10:20 For it is not ye that speak, but the Spirit of your Father which speaketh in you." (Matthew 10:16,19-20 KJV)
"As a bird that wandereth from her nest, so is a man that wandereth from his place"
The Holy Bible has numerous references to nests, some literal, some figurative. Examples of actual bird nests:
"22:6 If a bird's nest [see also Birds Of The Bible] chance to be before thee in the way in any tree, or on the ground, whether they be young ones, or eggs, and the dam sitting upon the young, or upon the eggs, thou shalt not take the dam with the young: 22:7 But thou shalt in any wise let the dam go, and take the young to thee; that it may be well with thee, and that thou mayest prolong thy days." (Deuteronomy 22:6-7 KJV)
Nests were also used as analogies for true safety (if based upon the LORD) - or perceived safety (if based upon man's ideas of "safety" - see also Where Is Your Place Of Safety?).
"32:9 For the LORD'S portion is his people; Jacob is the lot of his inheritance. 32:10 He found him in a desert land, and in the waste howling wilderness; he led him about, he instructed him, he kept him as the apple of his eye [see Apple Of The Eye]. 32:11 As an eagle stirreth up her nest, fluttereth over her young, spreadeth abroad her wings, taketh them, beareth them on her wings: 32:12 So the LORD alone did lead him, and there was no strange god with him." (Deuteronomy 32:9-12 KJV)
Matthew 8:20 is often misunderstood to mean that Jesus was some sort of a homeless wanderer, but it should be kept in mind that He was on a journey, far from the home that the Bible says that He had, when He said it i.e. "2:1 And when he returned to Capernaum after some days, it was reported that he was at home. 2:2 And many were gathered together, so that there was no longer room for them, not even about the door; and he was preaching the word to them" (Mark 2:1-2 RSV)
"8:20 And Jesus saith unto him, The foxes have holes, and the birds of the air have nests; but the Son of man hath not where to lay his head." (Matthew 8:20 KJV)
Fact Finder: How are doves used to portray Christian attributes?