Blackburnian Warbler. This species generally
feeds high in the trees but is otherwise more or
less intermediate between black-throated green
and bay-breasted in its feeding behavior. This is
true both of its flight frequency and its preferred
feeding position on the limb (Figure 5). It is also
intermediate in its method of hunting, usually
moving out from the base to the tip of the
branches looking down in the fashion of the bay
breasted and occasionally hopping about rapidly
upon the mat of foliage at the branch tips looking
both up and down for insects and even hovering
occasionally. They seem to use the method of rapid
peering, only occasionally hawking after a flying
insect. As further evidence, Knight (1908) wrote
"As a rule they feed by passing from limb to limb
and examining the foliage and limbs of trees, more
seldom catching anything in the air." Kendeigh
( 1945) said "I t belongs to the treetops, singing
and feeding at heights of 35 to 75 feet from the
ground.