Do birds use other bird's nests?
354605
Many birds use the nests abandoned by others. The snug, safe cavities hammered in a tree by woodpeckers may be used by house wrens, tree swallows, screech owls, or bluebirds. The solitary sandpiper will raise its family in the old nest of a thrush or blackbird. \n\nSo I say keep the nest up there!
246492
Birds nest or Crows nest
361986
Some of the natural resources that are shared by both squirrels and birds are the trees they both live in and the water they both drink. You've heard of a squirrels nest built in a tree and also a birds nest can be constructed in a tree as well. The water they consume could be from a nearby creek or pond, or they might rely on rainwater pooling in puddles to take a drink.
432648
Most birds who nest in trees weave their nests in order that it stay  together.  If birds just piled stuff up it would blow  away in a strong  wind.  But there are a number of species of birds who weave elaborate hanging woven nests.  The generic name for these is "weaver birds".  They live in large colonies, weaving their nests very close together  in the same tree.  There are also a  number of species of  "Bower birds", who create elaborate bowers, part of which is woven into an arch.  These bowers are not actually nests, however, but male displays aimed at attracting females.
862311
I think ornery ornithologists probably give each other the bird quite frequently.  After all, they egg each other on.  If they don't know what they are doing, they just wing it.  Why?  Just beak-claws.  Nest question?
462213
It just isn't true that you see baby everything else and not pigeons. You don't see baby sparrows either. Or baby hummingbirds or baby crows. Most baby birds (with some exceptions, like chickens and ducks) are naked and helpless when they hatch. They grow very fast, but you don't see them until they're big enough to fly out of the nest. By that time, they are the same size as adults and are almost completely feathered. So the answer is, you DO see baby pigeons, you just can't tell they're babies.
178100
The time it takes for a weaver bird to build a nest depents on the strength, agility, and skill of the birds.  All together, it will take a very long time for a weaver bird to build a nest because:\n\nThe nests last well through the 3-month breeding season, sometimes even up to a year. After the breeding season, other small birds may roost in the abandoned nests. The nests are made entirely out of strips of grass which the birds collect by cutting a notch in a tall grass, then stripping off a 30-60cm length.  \n\nNo stalks or entire grass blades are used. The birds then use their strong beaks to weave and knot the strips of grass. A newly-made nest is green with fresh grass and turns brown as the grass dries. A bird may make up to 500 trips to complete a nest. Madoc reports that a "male" nest he examined comprised 3,437 strips of grass 4-50 cm long.
677812
I've heard of attacks by mockingbirds and bluejays and have seen both of these birds swoop on other potential predators such as cats. They only do it when they feel their nest (with eggs or nestlings) is threatened. The solution is just to stay away from the nest.
440541
yes, actually most species of ants do this.  the winged ants are the queens and reproductive males of the next generation.\n\nthey leave their home nests all at the same time, and have a big royal party in the air.  after they mate, the queens shed their wings, burrow into the ground and start a whole new ant colony - never to fly to again.
560885
You would think that the pecking itself or the usage pattern of (as it were) of the pecker would be enough to identify not only the sub-species but the individual, however, there is not scientific evidence to show that this is the case. \n\nIt is possible through the use of photgraphs of the peckers to identfy even beyond the sub-species to the invidual (there are a few famous cases of this).
131759
Animals are extremely adept at hiding their nesting sites.  It would greatly help me answer your question if I knew what kind of owl nest you were looking for since different species have various methods of nesting.  You are most likely correct in assuming you are looking for the wrong type of nest.  The owl has probably found a hollow tree or an old nest of some other bird.
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There are several.\nhttp://birding.about.com/library/weekly/aa060797.htm
457062
There are wild pigeons; they are called rock doves, though I sometimes think 'concrete doves' would be a better name.
223508
Yes, Birds can cover MANY miles each and every day. When they stop to feed, drink or bathe they pad around in water. Most often nothing sticks to the birds, but there are the times that eggs and materials stick on their feet and legs. This most often happens with ducks and their webbed feet.
360611
Birds and bees? There are birds and bees? What do birds and bees do together?
610952
Birds hear a lot better than we do, and worms moving around in soil make noise that is distinctive. OR, maybe they have Xray vision! :-)
763451
Its called the understory layer but they often build nests close to the ground.