Im looking for the common and, maybe, the scientific name, of those birds. They´re a bit smaller than the crows, much more less "masive", kind of "stilysh". They´re so black that sometimes looks bluish. Like to pose in the very top of the trees and poles. And very noisy. They ate almost anyting, but prefer bread. Well, hope someone knows. Ah! Very important! I LIKE THEM VERY MUCH! I dont tink they´re pests. I donno want to get ride off them.
120949
They sound like Grackels.  I think they are grackels by your comment that their coloring changes (probably with the light).  Grackels have that characteristic.\n\nStarlings do not have bluish coloring and are typically brown with some light brown coloring as well (at least the breed I have in my yard).  :o)\n\nYou can see a photo of a grackel here:  http://www.uwrf.edu/~W1051956/grackel1.jpg\n\nAnother very good photo of a common Grackel showing a blueish tint to his head is here:  http://en.wikipedia.org/wiki/Common_Grackle\n\nYou can see a photo of a Starling here:  http://www.acclaimimages.com/_gallery/_pages/0025-0310-3016-4303.html\n\nUnfortunately many people look at both these birds as pests.\n\nHope this helps. Happy Birding!!
645575
If it's a medium-sized, rather ugly mottled black/brown bird that congregates in the evenings to form a roost community then it may be grackles.  They have no song, just a rather raucous squawking call and when they gather by the hundreds in the trees nearby, they are a nuisance of the first order.  Much worse than pidgeons.  We have them in Texas and I believe that at different times of the year they plague most of the US.
440474
A transgenic virus carried by birds and the birds unaffected by it. You should be writing horror stories. Click the link below.
448741
I was right! It's a FLICKER !\n\nIt's a kind of woodpecker, also known as the yellowhammer.\n\nThat was really a good description.\n\nI guessed flicker, then I checked out your pic!\n\nCOOL!\n\n;-)
490847
For which type of bird?  The blonde, brunette,  etc or the ones that fly.....well  even those fly these days :)
98721
I found a magpie nest with three large babies in it and the nest had no roof, so I have no Idea, but not all members of the species must build them. I would guess though that it provides protection from the elements, and provides shade when the parents are foraging. Some other species such as orioles and cliff swallows build enclosed nest, although I dont know of any corvids that do.
9314
Those annoying birds are probably American Coots.\n\nIn southern California the golf courses have a history of hiring a hunter to remove the birds when they become a problem.
357923
This will blow your teacher away!\n\nENGLISH HOUSE SPARROWS once found in huge numbers just a few years ago are now almost never seen and no one knows why!\n\n(fact!)
208846
http://www.carolinabirdclub.org/brc/checklist_of_South_Carolina_birds.html\n\nDo you think this will help?
488655
Sounds like you saw a painted bunting.\nHere's a pic http://www.birds.cornell.edu/AllAboutBirds/BirdGuide/Painted_Bunting.html
616408
There have been plenty of studies but nobody seems to have a good answer!\n\nI visited a zoo last Sunday (my kids took me, lol) and there were plenty of sparrows there - nesting as well.\n\nhttp://www.birdsofbritain.co.uk/bird-guide/house-sparrow.htm
580876
Yes, it does change as they grow from tiny chick to adult crow.  Also, the same crow changes its calls depending upon the time of year and also depending upon what the crows are "saying" to each other.  It can be an alert to danger, a signal to fly away, an all clear, "I'm hungry" from a bird not yet developed enough to care for itself fully, and there is even an "I'm in the mood" signal among calls.  Actually all birds have a varied vocabulary for communication, but we usually don't pay enough attention to hear them.  Good ear!
206245
There are wild pigeons; they are called rock doves, though I sometimes think 'concrete doves' would be a better name.
348993
I really liked rowbear20's "Paloma Dulce"--Sweet Dove! Also, La Paloma Azul" means a female blue dove--& blue is your favourite colour! Personally, I'd always stay away from "cutsey" names--no one ever takes you seriously! Also, how about an image of your own, rather than an avatar? You could send a "double" message about yourself, with the two coordinated. If you don't want to use your own photo, you could scan  from a birdbook--that would be fun! Stop me! I'll be over in 15 minutes......
173797
Well, crows really can't get bigger. They could gain more weight perhaps, but they really can't grow taller due to their DNA. Distance can play tricks on your perception on size. Depending on where you are standing when you see a crow, it may seem bigger or smaller than their actual size.\n\nRavens are bigger than crows. Do you have Ravens in your area?
203363
Yes, we do have lovely songbirds here but bird feeders are readily available already so you need to think of some sort of characteristic that your bird feeder has that the ones that we have do not have. You need a selling point.\n\nYour selling point should not be protection against squirrels because we don't have the American gray squirrel. The little red ones that we have don't live near people, they are very shy and do not attack bird feeders.\n\nMaybe they are easier to load, or hold more seeds without spoilage or maybe your feeder has a design that prevents wastage of seed falling to the ground. I haven't seen your feeder so I don't know how to sell it.\n\nYou can see the kind of feeders that we use on the web site of the LPO (League pour la Protection des Oiseaux).\n\nIf you can send me a picture of your feeder, maybe I can think of some more ideas.\n\n\nOh, yes, Thank you, Mr. Curious for your helpful comments.
591717
this question's kind of too big for a full answer on yahoo answers... but i would suggest you start with wikipedia and then follow links to the bits and pieces that interest you. (e.g. looking up a particular species that you want to use as an example). there are heaps of reasons birds migrate--seasonality of food source, mating, nesting site being overly far from a constant food source, etc... really, just start with wiki to get a basis and then hunt down the specifics. there are heaps of birdwatchers sites which will have nice pix on them too if you google them. good luck.