In the recent thread on the testing results summary from a three year survey of West Nile Virus incidence in sampled grouse from Wisconsin, Minnesota and Michigan. Several comments were made about ruffed grouse population declines in Zone 3 and Zone 2, with several folks pointing their fingers at predators and predation as the principal drivers. While doing some background reading this morning, I came across this summary study from Wisconsin and found several interesting and disturbing findings in their data:
https://www.3billionbirds.org/findings
So, the next time you hear someone shouting about predator control needed to preserve bird populations, ask them if they own a cat...and whether that cat is allowed outdoors to roam free.
Yes, most of this data is specific to passerine birds...
IF a grouse can fly into a window or home, it can be killed by a cat that is allowed to roam free. Let's not be too quick to blame the predators who are not pets...particularly in Zone 3.
Note the impacts of habitat restoration and preservation on waterbirds and waterfowl. Yes, Delta Waterfowl does some predator control, but not on a landscape wide basis.
https://www.3billionbirds.org/findings
So, the next time you hear someone shouting about predator control needed to preserve bird populations, ask them if they own a cat...and whether that cat is allowed outdoors to roam free.
Yes, most of this data is specific to passerine birds...
IF a grouse can fly into a window or home, it can be killed by a cat that is allowed to roam free. Let's not be too quick to blame the predators who are not pets...particularly in Zone 3.
Note the impacts of habitat restoration and preservation on waterbirds and waterfowl. Yes, Delta Waterfowl does some predator control, but not on a landscape wide basis.