Habitat is the key here,once you find the habitat you find the bird,once you find the bird its down to getting permission to go on the land ,study the subject and stick to the one subject,after that its down to what you want to get out of it ,quick snap shots or good close ups (this is obviously down to what equipment you have available ).
My main passion with wildlife in general as been owls ,i saw plenty on my walks around the moorlands and valleys but i was only armed with a small compact ,this is were i was seeing regular little owls dotted around my local walks ,i decided i wanted to know more about them ,and at the time there was not much info on them so i decided to find out myself ,i spent lots of hours watching them ,this led to knowing more about them which led to the more serious photography with them,
It realy is down to how much time you are prepared to put in,you realy do reap what you sow,i have spent hours sitting and waiting and coming home with nothing,then their are times i get shots within 20 mins,..back on to finding owls ,it is seasonal and some species are easier to capture during the day than others ,please feel free to contact me if you need any info