March 17th 2020-The Hawkwatch Continues Despite the Virus

Borrego Springs is responding to the Coronavirus crisis as is the rest of the nation and world. For all of us at the hawkwatch, our hearts go out to those that are suffering from the virus and hardships that have been created. We are trying to continue monitoring the migration of Swainson's Hawks and at the same time remain safe. At both the day watch and evening watch we ask folks to not congregate on the hill. A sign is posted at the bottom of the day site hill indicating that only the leader and assistants should climb the hill. At the evening site we ask folks to maintain a respectful distance from each other and do not share scopes.

I will NOT be sending out ALERTS to 400 plus folks when we have enormous numbers of Swainson's Hawks in town. To curtail the spread of the virus we are trying to minimize travel to the area. However, the number of hawks recently has taken a nosedive. So travel to Borrego Springs for the hawks is a non-starter. I believe that a recent flower bloom with possible caterpillars in Organ Pipe National Park, Arizona and the contiguous biosphere park in Mexico have stalled migration. The Swainson's Hawks are probably gorging on the caterpillars (if present). I am trying to locate someone in the area of Southern Arizona and Northern Mexico with information concerning the possible food source.

Here are some recent photos of hawks that we observed last week.

Tuck Russell-SW feeding on Crane Flies

Tuck Russell-Feeding on Crane Flies

Tuck Russell

Hal With the Only Bird of Prey He Can Photograph

Kettle of Hawks-Karen Orso

Early Morning Gathering on Mesquite Dunes Before Migrating-Karen Orso

Borrego Valley Hawkwatch 2020-February 21-March 7

February 21-March 7, 2020-New Faces and Some Nice Swainson's Hawks

Date:               Leader:
February 21    Hal Cohen
February 22    Marilyn Dickson
February 23    Marilyn Dickson
February 24   Tracee Geerhaert
February 25    Candace Hess
February 26    Candace Hess
February 27    Laura Webb
February 28    Hal Cohen
February 29    Candace Hess
March 1           Laura Webb
March 2           Hal Cohen
March 3           Candace Hess
March 4           Tracee Geehaert
March 5           Laura Webb
March 6           Don White
March 7           Don White  

Migrants:
Feb. 21-0
Feb. 22-0
Feb. 23-1 Northern Harrier
Feb. 24-8 Swainson's Hawks (SW's)
Feb. 25-0
Feb. 26-0
Feb. 27-0
Feb. 29-6 SW's
March 1-0
March 2-5 SW's
March 3-0
March 4-271 SW's; 5 Turkey Vultures (TV's)
March 5-84 SW's; 2 TV's
March 6-25 SW's; 1 TV
March 7-351 SW's

Discussion:
The beginning of the season began with only a trickle of hawks, until March 4th. The evening of March 3 we witnessed a large kettle of hawks finally settling into the date farm. The evening of March 6th we watched two waves of approximately 250 hawks drop into an area near The Springs RV Park. The first you tube can be accessed at: https://youtu.be/eVZoJZAnkzY

On March 4th and 5th we watched several hawks aerial feeding on Crane Flies. Attached is a photo taken on March 7th. The flies are everywhere throughout the valley. The adult flies live for a few weeks and apparently do not feed but only mate. On March 7th a very strong NW wind got the hawks up early. The totals for 7th was 351 SW's

Evening Watch:
Saturday March-At least 47 SW's flew low directly over watchers at the hill

Prediction:
Sunday March 8th-migration of around 50 or more SW's. With the time change the hawks will probably begin to kettle and feed around 9am.

Adult Light Inermediate SW-Hal

The Day Watch-Hal

Date Farm-The Evening of March 7-Ted Springs

 

Tommy and Stella At the Evening Watch-Deborah Lebo

Jude-Our Youngest Watcher

Cranefly-Hal

Late Evening at the Night Watch-Kirt Smith