This is a follow-up to Dave Cahlander’s announcement from Oct 13 regarding the 
Seasonal Reports checklist. Specifically, “sub-species have been added to keep 
track of the multiple sub-species seen in Minnesota.”

MOURC is now accepting reports of selected subspecies. We are doing this for 
the following reasons:

1. The trend is for more species to be split along subspecies lines. We only 
see this increasing and becoming more problematic from a records-keeping 
standpoint.  Maintaining  a  subspecies database prepares us for when a 
subspecies is elevated to full species status. 

2. We want to be able to add to our knowledge of Minnesota birds by tracking 
them at a subspecies level. Currently, we do not have a systematic or 
disciplined process for understanding the status and distribution of subspecies 
in MN. This is a first step in that direction. 

A team of MOURC members selected subspecies based on the following criteria: 
(1) they can be identified in the field (i.e. handling is not necessary for 
identification), (2) they have well documented occurrences in the state, and 
(3) they may be considered candidates for potential splits to full species 
status or have been considered at some point in the past. Please note that the 
resulting list is not a final list of all subspecies that occur in the state 
and will be updated over time.

Note that subspecies that we track will have an assigned status: accidental, 
casual or regular. The same MOURC processes will apply based on these status. 
For example, a report of an “Audubon’s” Yellow-rumped Warbler, having an 
accidental status, will require a request for documentation (RQD) form.

You can assist us in developing a better understanding of the occurrence of 
subspecies in the state by submitting sightings via the MOU Seasonal Reports 
web site at https://moumn.org/moureports/season.php.  


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