Date: 9/14/20 7:22 am From: 'Russ Ruffing' via Maryland & DC Birding <mdbirding...> Subject: Re: [MDBirding] any research on migrant traps?
My 5.5 acre yard adjacent to Patapsco State Park In Howard County is a high point more or less, and has been a fantastic location for migrants over the years. My morning yard surveys during migration routinely match or exceed the numbers and diversity of known locations like Rock Creek and Wheaton, and most times it’s just me surveying vs multiple birders at those locations. Over the years I’ve noticed that birds tend to be flying up from the Patapsco River valley to my location at sunrise, ostensibly to forage in the trees that catch the early sun. So higher elevations may be favored simply because they catch the sun earlier than other locations.
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> On Sep 14, 2020, at 8:59 AM, John Stith <john.stith...> wrote:
> I've been wondering why migrant traps -- places that attract a lot of migrating birds -- are where they are.
> I read this nicely detailed description of the maintenance yard area of Rock Creek Park in DC. It points out the the yard is at the top of a hill that is higher than most of its surroundings.
> http://www.thebirdist.com/2015/10/a-crudely-drawn-guide-to-birding-at-dcs.html >
> Is elevation part of what makes a migrant trap? Peninsulas like Cape May in New Jersey make a lot of sense, but what about inland. How would one go about identifying a migrant trap in a place not already widely known. Does anyone know of any published research on this?
> John Stith
> Chillum, Md.
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