Bird from cold latitudes longing to shelter in widow’s house (9)
I believe the answer is:
dowitcher
'bird from cold latitudes' is the definition.
'dowitcher' can be an answer for 'bird' (dowitcher is a kind of bird). I am unsure of the 'from cold latitudes' bit.
'longing to shelter in widow's house' is the wordplay.
'longing' becomes 'itch' (itch can mean a desire or longing).
'to shelter in' means one lot of letters goes inside another.
'widow's house' becomes 'dower' (I can't justify this - if you can you should believe this answer much more).
'itch' put inside 'dower' is 'DOWITCHER'.
Can you help me to learn more?
(Other definitions for dowitcher that I've seen before include "high-flyer at sea?" , "bird" .)