One of my ornithology students asked me some questions I can not find an
answer to, so maybe somebody here has some ideas. Since Anna's females
raise their young by themselves, and assuming they must incubate the young
for considerable periods, does her mate allow her to use "HIS' feeder, or
does she have to fend for herself? If the latter, how does she control a
feeder against the wishes of the guardian male? Would she be able to battle
him for resources? Is there a selection factor here, where males are
"easier" on females than on male intruders?

Rob Sandelin
Naturalist, Writer, Teacher
Snohomish County