These birds are frequent visitor at my backyard during the winter / migrant season.
I have searched for it for the past two weeks and found nothing.
Could this haze weather prevent it from returning?
Birds have been shown to use a sun, moon and stars compass, magnetic fields, visual landmarks and sense of smell
Brown Shrike below
EDIT (9 Oct. 2015)
Finally, after weeks of hazy weather, the sun shows it self and clear blue sky with white clouds yesterday.
The brown shrike perched on that wire, but I did bring my camera and telephoto. Shrike, please wait for me!
Look at the Skywatch Friday HERE