Bishop's warning about a prairie province (7)
I believe the answer is:
alberta
'prairie province' is the definition.
'alberta' can be an answer for 'province' (province of Canada). I am not certain of the 'prairie' bit.
'bishop's warning about a' is the wordplay.
'bishop' becomes 'B' (chess abbreviation).
'warning' becomes 'alert' (alert is a kind of warning).
'about' is an insertion indicator.
'b' inserted within 'alert' is 'albert'.
'albert'+'a'='ALBERTA'
Can you help me to learn more?
(Other definitions for alberta that I've seen before include "Where is Jasper" , "Einstein" , "region of North America" , "Canadian province, capital Edmonton" , "Bale rat out of Canada" .)