Dateline – December 13, 2019 – Denton, Texas

How do vultures decide where they want to roost? Who can say?

A typical DFW vulture roost

Ordinarily, a large congregation of vultures might be found high in the trees of swampy Trinity River bottomlands, or those of its many tributaries. Alternatively–and in my experience, more commonly here in DFW–vultures prefer to roost communally on transmission towers located in remote utility right of ways. Often these sizable roosts will be located next to a landfill–the big black birds seem to have a real preference for the lovely aroma of methane gas.

I recently stumbled across vulture roost that’s a little bit different. This large congregation on the campus of Texas Woman’s University is one of the most unusual I have yet to discover in the Dallas/Fort Worth metroplex. I’m puzzled by the appeal of this location on a busy campus and surrounded by high-traffic thoroughfares. Other than height, this dormitory building does not seem to be an obvious choice for these bird. Nonetheless, vultures are attracted to this spot in droves.

At first glance there is nothing out of the ordinary about this TWU dormitory building…
…but a closer looks reveals an oddity
Vultures by the dozens have chosen this spot for their nightly roost
Each balcony roosted a half-dozen or more vultures
The big black birds preferred to face the setting sun
That’s a lot of vultures!
Launching from a balcony rail

We have two types of vultures here in the metroplex–the Black Vulture and the Turkey Vulture. Both kinds can be found at this communal roost. Fortunately, they are relatively easy to differentiate…. Turkey Vultures have pink heads and white-tipped beaks. Their feathers are deep brown in color. Turkey Vultures can be identified in flight by the light-colored feathers running along the entire length of the trailing edge of their wings. Black Vultures–as the name implies–are nearly uniformly dark in color. In the air, a Black Vulture can be recognized by the light colored feathers located only at the ends of each wing.

Black Vulture (left), Turkey Vulture (right)
In general, there did not seem to be any antagonism between the species
Cruising over the rooftop
This frisky pair of Black Vultures chased each other through the sky
The circled the building many times at high speeds
The chase continues
A Black Vulture at altitude
Note white wing-tip feathers of the Black Vulture
Coming in for a landing
Their interactions often continued, even after they landed
These are Turkey Vultures… note the pink heads and the characteristic
light colored feathers on the tail and trailing edge of the wings
Turkey Vulture soaring on high
A pair of Turkey Vultures roosting together on a balcony rail
A Turkey Vulture checking its reflection in a dormitory window
One of many
A window fly by
About to join his friends on the balcony
A Turkey Vulture holding its wings in a deep dihedral position
Turkey Vultures are thought to have an excellent sense of smell
It is the Turkey Vulture’s ability to track by odor that helps
them to locate roadkill and other carrion
Often the the more gregarious Black Vulture will steal
a prime carrion find from their Turkey Vulture friends
A pair of Turkey Vultures jostling for position on the railing
A closer look at a Turkey Vulture
The comings and goings were constant as the sun began to set

Can you imagine spending a long, hard day in class, and then coming home to your dormitory, only to find a scene like this just outside your window? I’m not sure how the university feels about this situation. If anyone has additional information, please drop me a line and fill me in… chris.dfwuw@gmail.com. Thanks!

See you later!