Crows, bees , trees

 I live in an apartment complex which is luckily surrounded by some green space around it. Hence squirrels, mynas and  pigeons visit our balconies often. From past one month there is a colony of bees which  have  mistaken  humans to be friendly. First they built their hive in of the balconies , our pest control guys actually sprayed some chemical which made their colony un usable. Then they made a hive in one of the  lower floors, this time they  burnt  down the hive. The next morning, i felt sad to be walking on a bed of  dead bees.
Now, the point is  people in our apartment, are not wrong in bringing the hive down, since they build very close for comfort right in the balconies where  we dry clothes, keep plants, kids walk around. But at the same time, there are no more huge  trees in Bangalore, so where do bees go? Where do they build their colony?

India has suddenly woken up to benefits of haldi,  honey and  ghee but what are we doing to produce them?
We are demolishing trees in the name of road widening, apartments and malls so  honey bees and even crows have become rare. Gone are the days when I used be woken up by my deep slumber in the afternoon by some crow , now I long to see a crow and have not seen one from many a days.

Every body seems to have noticed the  disappearance of  sparrow but I have seen even crows disappear in my part of Bangalore.