Yellow-crowned Night Heron

Ongoing Research

For the last seven years, Wildlife Rehab and Education has been working with biologists Woody Woodrow with the U S Fish and Wildlife Service, Sharon Schmalz Director of the WR&E Wildlife Center and Dr. Ray Telfair a well known ornithologist and former Texas Parks and Wildlife colleague of Woody’s study the movement patterns in Yellow-crowned Night Herons.  While these herons are a common sight in our ditches and neighborhoods, biologists don’t know too much about their movement patterns.  They are high tree nesters and so banding them in the nest is extremely difficult.  Each year WRE typically releases a considerable number of these herons.  To Sharon and Woody, this seemed like an opportunity to band some birds and hopefully collect some information about the birds.  With the help of Dr. Ray Telfair banding and marking began in 2003.  Additional research is being conducted by Dr. Heatley from Texas A&M University’s College of Veterinary Medicine.  She is using small blood samples collected from healthy birds to determine normal electrolytes and other blood parameters in these herons.  Thus when ill or injured herons are, these values will help rehabilitators, veterinarians and biologists determine appropriate treatment and to diagnose diseases or toxicoses.    Before the banding began, Sharon had started to apply hacking techniques used with raptors with the herons.  This allowed the birds to transition from a captive state to living without her assistance.  When the birds are ready to go, the team bands them with a USFWS number specific aluminum band.  In order to track observations of the birds, a nylon flag is also placed with the band above the bird’s wrist (what we think of as their knees).  The bands are typically aluminum gray but the [...]