In my part of Alaska’s Interior we have two species of chickadees.  These tiny and delightful birds cheer up the coldest day but are hard to photograph.  The black-capped chickadee is often found in mixed habitats of spruce, willow, birch and aspen.  The boreal chickadee is associated with the black spruce bog habitats.  They are quick and refuse to stay put so you must be very quick yourself.  One sure way just might be the oldest techique for bird photography out there.  Simply pre-focus on a favorite perch and wait.