Regional Species of Greatest Conservation Need

There are several different levels or lists of species whose populations warrant some sort of monitoring and/or protections. These include federal and state endangered, threatened ("T&E") and special concern lists; and the species of greatest conservation need generated by the US state-level Wildlife Action Plans. I've served on the Michigan T&E technical committees for insects and birds (as co-chair or chair of birds) since 2014.

More recently, an effort has been underway to compile lists of Regional Species of Greatest Conservation Need (RSGCN) to more accurately reflect species' ranges and harness the management power and shared priorities of multiple organizations across regional landscapes. These lists start with all the species listed on each of the states' Wildlife Action Plans, determine which have populations that are primarily within the Midwest region, and then utilize expert opinion regarding concern levels, threats, and other factors. Two of these lists have been completed: the 15-state Southeast Region and the 13-state Northeast Region. 

Over the past year, I participated on two taxa teams (birds and Odonata) for the 13-state Midwest Regional Species of Greatest Conservation Need coordinated by the Midwest Landscape Initiative of the Midwest Association of Fish and Wildlife Agencies (MAFWA). There were 21 experts on the bird taxa team; I represented Michigan along with Mike Monfils of the Michigan Natural Features Inventory.

13 states in MAFWA region

Data on Canadian provinces were considered although as this is a US-based initiative, representatives from Canada were not involved in the committees. Note that there is also some overlap in US states in the various regions, and some species included on the Watchlist were designated as deferred to a region that had more responsibility for the population.

Twenty-five Michigan bird species are on the list of Midwest RSGCN:

Another 8 species Michigan species were designated "Watchlist - Assessment Priority" due to there being concern, but insufficient of variable data across the states. Another handful were put in that "deferred" category because the regional responsibility was greater for the southeast or northeast.

These are (not so great) screen shots from the data table which can be viewed here. The table contains all the data on all taxa from all states. There is the ability to sort and filter, similar to spreadsheets like Excel. To just see Michigan's birds, go to Filter and choose Where Taxa is Birds and add the condition Where MI_Occurs is Yes. You'll see many other ways to filter and sort the list. There are a lot of columns, some of which indicate the various criteria used to make determinations. 

The project has a website, where you can view highlights and download the full report with appendices.

If you are interested in the Odonata (dragonflies) list, see this post at Urban Dragon Hunters.

Neotropic Cormorant: A new Wayne County species

Birder Robert (Bobby) Irwin found a Neotropic Cormorant (just assigned to a new genus, and now Nannopterum brasilianum) off Humbug Island at the Detroit River International Wildlife Refuge on 28 June 2021. The eBird checklist with photos is here. As of 19 September 2021, it was still being seen, at least sporadically.

This identification is not an easy call. I happened to have visited the Refuge the previous day, one of the first times I have returned after spending years doing bird and insect surveys for the USFWS prior to the Refuge opening to the public. Various habitat modifications have resulted in a nesting colony of Double-crested Cormorants just north of the new fishing pier, with nearly 30 nests that I could see. Most of the young have fledged, so there were dozens of cormorants in the trees, flying around, and in the water, all in various plumages. Neotropic Cormorants are smaller than Double-cresteds, have longer tails, and different plumage on the face, but these differences are not always obvious, especially when the birds are moving around or distant. Kudos to Bobby for picking this one out.

As you can see from the range map, this bird is well out of range. However, they are known to wander a lot, and there are a number of Michigan records, mostly from the past few years. In fact, there is a pair nesting at Lake St. Clair Metropark in Macomb County right now! 

I have maintained a comprehensive Wayne County checklist, including historical records, for many years. By my accounting, this makes species #352 for the county, of which 9 are extirpated/extinct, hypothetical, or not "countable."