The Important Bird Areas of Florida - National Audubon Society

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The Important Bird Areas of Florida: 2000–2002 – Pranty – 2-Jul-02 256Boot Key (single-day counts in mid-Oct):SPECIES DATES NUMBERS COMMENTSSharp-shinned Hawk 1989–1994 mean of 329 birds(M)(range of 66–993)Broad-winged Hawk 1989–1994 mean of 193 birds(M)(range of 66–415)American Kestrel 1989–1994 mean of 75 birds(M)(range of 39–159)Merlin 1989–1994 mean of 31 birds(M)(range of 15–44)Peregrine Falcon 1989–1994 mean of 106 birdsmean of 5% (M)(range of 45–190)Cliff Swallow 9 Oct 1993 750 birds Florida record high count (M)Raptors (numbers)Raptors (diversity)1989–19941989–1994mean of 795 birds(range of 329–1808)mean of 9 species(range of 7–13)(M)Raptor data provided by Wayne Hoffman (formerly National Audubon Society) and published in +Pranty (1996a);see also +Hoffman and Darrow (1992); swallow observation by Wayne Hoffman, P. William Smith, and Bill Prantyet al., published in Florida Field Naturalist.Curry Hammock State Park (seasonal counts of southbound birds 14 Sep–30 Oct 1999, 15 Sep–13 Nov 2000,and 15 Sep–13 Nov 2001):SPECIES DATES NUMBERS COMMENTSOsprey 1999–2001 mean of 1004 birds (range of 983–1093) (M)Northern Harrier 1999–2001 mean of 685 birds (range of 527–786) (M)Sharp-shinned Hawk 1999–2001 mean of 4328 birds (range of 3697–4741) (M)Cooper’s Hawk 1999–2001 mean of 533 birds (range of 335–839) (M)Broad-winged Hawk 1999–2001 mean of 3268 birds (range of 2984–3535) (M)Short-tailed Hawk 1999–2001 mean of 27 birds (range of 16–38) mean of 5% (M)American Kestrel 1999–2001 mean of 3666 birds (range of 3029–4338) (M)Merlin 1999–2001 mean of 646 birds (range of 522–834) (M)Peregrine Falcon 1999–2001 mean of 1623 birds (range of 1432–1894) mean of 81% (M)Raptor (numbers)Raptors (diversity)1999–20011999–2001mean of 16,094 birds (range of 15,804–16,553)15 species annually, with 8 of these representedby >500 individuals eachData provided by Casey Lott (Hawkwatch International and Audubon of Florida); see also +Davidow (2001)General data applicable to most sites:SPECIES DATES NUMBERS COMMENTSWhite-crowned Pigeon Annual common (R)Mangrove Cuckoo Annual uncommon (R)Gray Kingbird Annual common (B)Black-whiskered Vireo Annual uncommon (B)“Cuban” Yellow Warbler Annual uncommon (R)“Florida” Prairie Warbler Annual uncommon (R)Overall diversity ____ list 143 natives1 exoticData provided by Rick Sawicki (formerly of Audubon of Florida)(M)
The Important Bird Areas of Florida: 2000–2002 – Pranty – 2-Jul-02 257OTHER RESOURCES: The floral diversity of tropical hammocks of the Florida Keys far surpasses that ofany other forests in the continental United States. • The Florida Keys are a designated Area of CriticalState Concern. This IBA includes habitats for at least 24 species of rare vascular plants and 29 rareanimals. Endemic mammals include the ♦”Key Largo” cotton mouse (Peromyscus gossypinusallapaticola) and ♦”Key Largo” woodrat (Neotoma floridana smalli). • Many archaeological andhistorical sites are known from the area, such as Indian burial mounds and middens, and 19 th centurysettlements. • The Florida coral reef outward of the Keys is the third largest barrier reef system in theworld. It supports thousands of species, including 1200 mollusks, over 450 fishes, 450 marine worms,and 100 corals +(Jaap and Hallock 1990).THREATS: *development, human disturbance, exotic plantsCONSERVATION ISSUES: The unique tropical hardwood hammocks and pine rocklands of the FloridaKeys—forests composed primarily of West Indian vegetation—shelter several extremely rareanimals, but are being lost at a rapid rate due to development. If acquired completely, sites of theFlorida Keys Ecosystem CARL–FF Project, together with existing conservation areas, will protect allsignificant, unprotected hardwood hammocks remaining in the Keys, as well as populations of severalrare plants and animals. • Acquisition of the CARL–FF sites also will protect the coral reefssurrounding the Keys. • Management will be phased in and will involve mainly removing exoticplants, preventing further habitat fragmentation, removing trash and debris, posting and some fencingof the sites, and establishing some basic visitor amenities at selected sites.Based on the clear importance of Boot Key to raptors, and its habitat significance, efforts should beundertaken to publicly acquire the site.NOMINATED BY: Bill Pranty and Rick Sawicki (Audubon of Florida)REFERENCES: +Davidow, B. 2001. Falcons of the Florida Keys. Living Bird 20: 32–38. • +Hoffman, W,and H. Darrow. 1992. Migration of diurnal raptors from the Florida Keys into the West Indies. HawkMigration Association of North America Migration Studies, October 1992. • +Jaap, W.C., and P.Hallock. 1990. Coral Reefs. Pages 574–616 in Ecosystem of Florida (R.L. Myers and J.J. Ewel,editors). University of Central Florida Press. Orlando, FL. • +Pranty, B. 1996a. A Birder's Guide toFlorida. Fourth edition. American Birding Association. Colorado Springs, CO.WEBSITES: ,,,,
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MemorandumBill Pranty, Florida IBA
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The Important Bird Areas of Florida
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THE IMPORTANTBIRD AREAS OFFLORIDA:
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Page 277 and 278: Purple Martin (Progne subis)Tree Sw
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