![]() |
|
The President's Hoot Serious Problem in Indian River County…We Must Save Our Scrub-jays from Extinction! |
![]() |
| Florida scrub-jays, the only bird species unique
to Florida and keystone species of fire-dependent xeric oak scrub,
have been in a steady decline; 90% of the original populations are gone
due to the loss of habitat for agriculture and urban development and also
due to degrading of habitat from the suppression of natural fires. Like
our bald eagle, scrub-jays are listed as a threatened species by both
federal and state agencies. To rectify this decline, some scrub habitats
have been preserved and managed (although not enough) to protect this
species and the other species found only in scrub. Large areas are needed
as each scrub-jay family group, two breeders and up to six helpers, defends
approximately 13-25 acres of land. On November 20th, Ernest M. Cowan, will be speaking about the plight of the scrub jay populations at the Savannas Preserve State Park in St. Lucie County, where their numbers remained stable from 1996-1999, but have been steadily declining since then from 41 individuals to 28 individuals in 2003, a 33% decline over the 8-year period. He finds predation by natural and urban related animals are part of the problem. His study revealed that scrub jays are occupying territories that are much smaller than the normal optimal size and are having minimal reproductive success. In addition, the birds are subjected to predation pressures from natural predators present at higher than normal densities and by other predators, such as feral cats and dogs, brought into their habitat by encroaching urban development. The largest scrub habitat in Indian River County is the St. Sebastian River Preserve State Park with 21,748.42 acres (33 square miles), which is shared with Brevard County. This park is home to the fourth largest scrub-jay metapopulation in Florida. Although now, according to Judy Elseroad, scrub-jay populations drastically decreased by 52 to 63 % in the last two years due to “catch-up” restoration fires, the Preserve is now at a point where future proscribed fires where no single territory will be completely burned at one time, leaving the majority of the area in optimum condition. Hopefully, the population will now rebound. Judy will also be leading our Dec 2nd field trip to the preserve (See page ) to see the jays and the efforts being made there to protect the remaining population, including further habitat restoration. Indian River County has purchased other areas to preserve and
protect scrub-jays. As a result of studies from 1991 through
1998 of banded scrub-jays within the Sebastian Highlands that showed
54%decline from 35 breeding pairs to 16 breeding pairs, the U.S. Fish
and Wildlife Service (USFWS) stopped all development in the Highlands
until Indian River County and the City of Sebastian requested a Habitat
Conservation Plan (HCP) and received an Incidental Take Permit for the
purpose of maintaining 13 to 14 scrub-jay families in the Sebastian
area. Beth Powell, County Environmental Lands Manager, has had many
of these individuals in the Highlands banded and indicated that some
of these families are producing young. Nevertheless, Sebastian still
needs to stop allowing land clearing during the nesting season in areas
where we know there are jays. In addition the City should install traffic
calming devices near the Pelican Island Elementary School preserve,
ENFORCE the leash law, and change the landscaping ordinance so that
perch trees won’t be planted next to jay preserves. So there is hope for our scrub-jays - What needs to be done? What our county can do. 1. Conduct a countywide survey of all scrub jay habitats to determine
the presence of scrub-jay families and monitor them every five years. What You can do. You can help! Come Monday Nov 20th evening to learn from the expert what else we can do about other things that might be causing the population to drastically disappear as they are! Richard Baker, President |
|
All
images and text copyright Pelican Island Audubon Society. E-mail: piaudubon@bellsouth.net |
|