Quoting my reply to this question, from facebook, as I'd be happy to learn more on this:
"Nesting activity is influenced by a number of factors. And considering the scope of this question; which only appears to be narrow at first can be really vast, it can be addressed better if it is specified for particular group of birds. Because, different species have different preferences and habits though the habitat could be the same but for different reasons & microhabitats. Some of the major, apparent factors that influence the nest site choice could be Climate, Predators, Availability of Food & perhaps, Availability of nesting material. There could be numerous smaller and subtle factors which play a big role in choosing nesting site for birds create a highly localized environment to their preferences. Firstly it avoids a lot of efforts and competition for not so abundant nesting sites. So it's better to adapt than to compete. Most of all these birds which make their nests in the open on branches of deciduous trees are extremely well camouflaged and cryptic. And believe me, are extremely hard to locate. So, whether in the open or not, they are well hidden. They must be helping the birds probably to have a better view of their nest site and predators lurking around. It may be associated with direct sunlight in the morning, vegetation cover above or brood temperature. Other animals may not be finding such sites suitable for shelter which would avoid attracting predators. The twigs, branches, leaf litter from deciduous trees must be a good source of nesting material and also superb habitat / shelter for many animals including most of bird's prey base. Deciduous trees will have new leafbuds, young leaves, flowers, fruits as soon as the season passes or comes near its end. Which may be a great food source for birds or other animals which are part of bird's diet. etc.. These are a few in general and there could be many such factors. Questions such as these can be addressed effectively if pertained to specific group of birds or species. But of course, only after a lot of observation. :)" Regards, Saurabh On Mon, May 21, 2012 at 3:02 PM, Rajesh Sachdev <[email protected]>wrote: > It is observed that the nesting birds , camoufledgly build or regenerate > their nest every season. It is also understood that they try every step > hard to hide their nest with local vegetation or foliage. Than, why many > birds build their nest on deciduous trees, which are bare/leafless in the > season of summer or before spring. And that is the time when most of > resident birds are in breeding plumage and busy with their nesting activity! > > -- > Regards > Rajesh Sachdev > http://project-matheran.webs.com > https://www.facebook.com/leopardguy > > > > -- > You received this message because you are subscribed to the Google Groups > "delhibirdpix" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/delhibirdpix?hl=en. > -- Regards, Saurabh Sawant _ "The foot feels the foot when it feels the ground." http://www.facebook.com/saurabh.sawant http://www.flickr.com/photos/40451253@N04/
