First of all, I am so glad to see such overwhelming response from all of you. Pretty interesting discussion here.
I have found some interesting use of the *unwanted eggs*. Let me summarize it and this can be a reference for others who are going through the same feeling as of mine -
1) Keep these unwanted eggs and use them as dummy eggs from the next time. Boiling the egg looks like a nice option. So you need not go for synthetic dummy eggs. Original eggs can be used as dummy. Potential problem - Looking at the pace these guys breed you'll have plenty of such dummy eggs within a short span of time. SO let's look at other use of these unwanted eggs -
2) Use as supplements to Dog's meal
3) Give these eggs to crows
4) Consume these eggs yourself - some recipes from fellow members - scrambled egg, bake, muffins, cookies, in meatloaf etc...
Interesting Stuff.
g0ldenb0y55 - I don't have Fancy or Racing Birds. I have Tumblers. I guess they don't fall under racing/homing category. Do they fall under performing Birds? Yes I have gone through the "Loft Design" section, some good stuff over there. If the kind of loft I have is not suitable for Tumblers then I'll definitely start making a new loft. Since I am new to this can you guys help me with the breakup of the loft components like, perches, nesting box, aviary, settling cage, trap. I was not able to understand few of these, I mean the purpose of these. What should be the approximate size of the loft for 8 birds. My problem is that I stay at rented house (ground floor) & my landlord stays on the first floor. They were kind enough to permit me to keep pigeons and offer some space on the terrace. I'll not be able to effort to keep a big and heavy loft on the terrace. and there is absolutely no space on the ground.
maryjane - I keep the pigeons free in the morning and evening for about half an hour when I am present there. I started tossing three of the pigeons and they were just flying around the area for about 45 minutes for an hour and then I found that two of them (both males) have made their females pregnant. So yes I do keep them open when I am around. Saturday and Sundays since these are non working days for me, I keep them open for more time.
Hambone - Thanks for the inputs. For nest box, I have put a big carton inside the compartments (I don't have snaps of them & sent my camera back home for the time being). I have put sand and hay as nesting material and these guys have made their nest using hay over there. I have made sure that the eggs or babies can't fall down accidentally. I didn't get the point on shelves

. Perches, no I don't have, I'll arrange for the same. As far as the security goes, all the sides are covered with a wire mesh and a blue trap except from the front. In the front I have doors with wire mesh and I can lock these doors.
Now when I see I have written so much. May be I should stop know.
All suggestions are welcomed.
Thanks
-> Sushil