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COMMUNICATIONSSPECIALISTS, INC. 426 West Taft Avenueß Orange,CA 92865-4296 ß 1--73.4-998-3021* Fax 3.-73.4-974-3420 EntireU.S.A. (800) 854-0547 * Fax(800) 850-0547 * http://www.com-spec.com 3130 Laurel Road allen•buteobooks.com Shipman,ButeoVA22971 434--263-8671www.buteobooks.com BUTEO BOOKS is the largestretailer of Ornithologytitles in NorthAmerica, with over2000 in-printtitles in stock.

In-Print Falconry and of Prey Handbook of the Birds of the World. The first sevenvolumes of thisprojected sixteen- volumework havebeen published, including Volume 2, coveringthe diurnalraptors, and Volume3, coveringowls. They arepriced at $185 each.

The Raptor Almanac: A ComprehensiveGuide to Eagles, Hawks, Falcons, and Vultures. ScottWeidensaul. Lyons Press, 2000. 382 pp. Color photos.Cloth. $40.00

The Harris Hawk: Management, Training and Hunting. Lee W. Harris. SwanHill Press, 2001. 144 pp. Color andb&w photosand illustrations. Cloth. $32.95

Rare and Out-of-print Falconry Usuallyavailable from Buteo Books, the classicreference on diurnalraptors: Brown & Areadon:Eagles, Hawks and Falcons of the World. First Englishedition, 1968. $300.

Birds of North America series individualspecies accounts for over500 species,including.' Swallow-tailed Kite Zone-tailed Hawk Northern Hawk White-tailed Kite Hawaiian Hawk NorthernPygmy-Owl. Snail Kite Red-tailed Hawk FerruginousPygmy-Owl MississippiKite FerruginousHawk Elf Owl Bald Eagle Crested Caracara BurrowingOwl Northern Harrier American Kestrel SpottedOwl Sharp-shinnedHawk Merlin Barred Owl Cooper'sHawk Gyrfalcon GreatGray Owl Northern Goshawk Prairie Falcon Long-earedOwl Common Black-Hawk Barn Owl Short-earedOwl (R) Harris' Hawk Flammulated Owl Boreal Owl Red-shouldered Hawk Eastern Screech-Owl Northern Saw-whet Owl Broad-wingedHawk Whiskered Screech-Owl Available soon: Swainson's Hawk Great Horned Owl American Kestrel White-tailed Hawk SnowyOwl California Condor 2003 ANNUAL MEETING The Raptor ResearchFoundation, Inc. 2003 annual meetingwill be held on 3-7 September2003 in Anchorage, Alaska. For information about the meeting see the following website:http://www. alaskabird.orgor contact Alaska Observatory ([email protected]).

Personsinterested in predatory birds are invited to join The Raptor ResearchFoundation, Inc. Send requestsfor information concerningmembership, subscriptions, special publications, or change of address to OSNA, P.O. Box 1897, Lawrence, KS 66044-8897, U.S.A. TheJournal ofRaptor Reseatvh (ISSN 0892-1016) is publishedquarterly and availableto individualsfor $33.00 per yearand to librariesand institutionsfor $50.00per yearfrom The RaptorResearch Foundation, Inc., 14377 117thStreet South, Hastings, Minnesota 55033, U.S.A. (Add $3 for destinationsoutside of the continentalUnited States.)Periodicals postage paid at Hastings,Minnesota, and additional mailing offices.POSTMASTER: Send addresschanges to TheJout•alofRaptor Reseatvh, OSNA, P.O. Box 1897,Lawrence, KS 66044-8897,U.S.A. Printed by Allen Press,Inc., Lawrence,Kansas, U.S.A. Copyright2002 by The Raptor ResearchFoundation, Inc. Printed in U.S_A. (• This papermeets the requirementsof ANSI/NISOZ39.48-1992 (Permanence of Paper).

RAPTORRESEARCH FOUNDATION, INC., AwAgos Lifetime Achievement Aw•ards

The Tom CadeAward recognizesan individualwho hasmade significantadvances in the area of captiveprop- agation and reintroductionof raptors.Nomination packetscan be submittedat any time. Contact:Brian Walton, PredatoryBird ResearchGroup, Long Marine Laboratory,University of California, Santa Cruz, CA 95064 U.S.A.; tel. 408-459-2466; e-mail: [email protected]. The Fran and Frederick HamerstromAward recognizesan individual who has contributed significantlyto the understandingof raptor ecologyand naturalhistory. Nomination packets can be submittedat any time. Con- tact:Dr. Clint Boal, TexasCooperative Fish and Wildlife ResearchUnit, BRD/USGS, TexasTech University, 15th Street & Boston,Ag ScienceBldg., Room 218, LubbockTX 79409-2120U.S.A.; tel. (806) 742-2851; e-mail: [email protected].

Student Recognitionand Travel AssistanceAwards

The JamesIL Koplin Travel Award is given to a studentwho is the senior author and presenterof a paper or posterto be presentedat the RRFannual meeting for whichtravel funds are requested.Contact: Dr. Patricia A. Hall, 5937 E. Abbey Rd. Flagstaff;AZ 86004 U.S.A.; tel. 520-526-6222;e-mail: [email protected]. nau.edu. Application Deadline: due date for meeting abstract. The William C. AndersenMemorial Award is given to the studentswho are seniorauthors and presentersof the best student oral and poster presentationat the annual RRF meeting. Contact: Laurie Goodrich, Hawk Mountain Sanctuary,1700 Hawk Mountain Road, Kempton,PA 19529 U.S.A.; tel. 610-756-6961;email: [email protected] Deadline: due date for meetingabstract; no specialapplication is needed.

Grants

For each of the followinggrants, complete applications must be submittedto the contactperson indicated by 15 February. Recipientswill be notified by 15 April. The DeanAreadon Grant for $200-400 is designedto assistpersons working in the area of distributionand sys- tematics() of raptors.Contact: Dr. Carole Griffiths, 251 Martling Ave., Tarrytown,NY 10591 U.S.A.; tel. 914-631-2911;e-mail: [email protected]. The StephenR. TullyMemorial Grant for $500is givento supportresearch, management, and conservationof raptors,especially to studentsand amateurswith limited accessto alternativefunding. Contact:Dr. Kim Titus, AlaskaDepartment of Fishand Game, Divisionof Wildlife Conservation,P.O. Box 240020, Douglas, AK 99824 U.S.A.; e-mail: [email protected]. The LeslieBrown Memorial Grant for up to $1,000 to supportresearch and/or disseminationof information on birds of prey, especiallyto proposalsconcerning African raptors.Contact: Dr. Jeffrey L. Lincer, 9251 Golondrina Dr., La Mesa, CA 91941 U.S.A.; e-mail:[email protected]. CONTENTS PEREGRINE FALCON PREDATION ON DUNLINS AND DUCKS AND KLEPTOPARASITIC INTERFERENCEFROM BALD EAGLESWINTERING AT BOUNDARYBAY, BRITISH COLUMBIA. Dick Dekker ...... 91

THE 2000 CANADIANPEREGRINE FALCON SURVEY. Petra Rowell, Geoffrey L. Holroyd,and Ursula Banasch...... 98

BREEDING SEASON HABITAT USE AND ECOLOGY OF MALE NORTHERN PYGMY-. Alan R. Gieseand Eric D. Forsman...... 117

HABITAT USE BY SWAINSON'S HAWKS ON THEIR AUSTRAL WINTERING GROUNDS IN .Sonia B. Canavelli,Marc J. Bechard,Brian Woodbridge, Michael N. Kochert,Juan j. Maceda,and Mafia E. Zaccag•ini...... 125

RAPTOR AND CHIHUAHUAN RAVEN NESTING ON DECOMMISSIONED TELEPHONE-LINE POLES IN THE NORTHERN CHIHUAHUAN DESERT. Don L. Brubaker,Kathleen L. Brubaker,and BruceC. Thompson...... 135

SHORT COMMUNICATIONS

AERIALTELEMETRY ACCURACY IN A FORESTEDLANDSCAPE. Travis L. DeVault,Warren L. Stephens, BradleyD. Reinhart,Olin E. Rhodes, Jr., and I. LehrBrisbin, Jr...... 147

PERCH-SITE SELECTION AND SPATIAL USE BY CACTUS FERRUGINOUS PYGMY-OWLS IN SOUTH- CENTRAL ARIZONA. Aaron D. Flesch ...... 151

INTERSPECIFIC AND I•V•.CIVIC KLEPTOPAKASITIC INTERACTIONS OF THE BV_X•)v.O VULTURE(GYPAETUS BARBATUS) ATNESTING AREAS. Antoni Margalida and Joan Bertran ...... 157

GYRFALCON PREDATION ON MALLARDS AND THE INTERACTION OF BALD EAGLES WINq•RING IN CENTRAL ALBERTA. Dick Dekker and Gordon Court ...... 161

WINTERINGSNOWY OWLS FEED ON SEADucIcS IN THE BELCHERISLANDS, NUNAVUT, CANADA. GregoryJ.Robertson and H. GrantGilchrist ...... 164 THWCOLONIZATION OF SICILY BY THE BL•CK I•TE (MJLVUSMtGaaNS). Maurizio Sar• ...... 167

LETTERS

Gx•wtt•ot4 COLOR V•d•TIOt4. Ian Flann ...... 173

Two Wi-n•-xAii•wi) Sv_•E•gLES (H•Ttm •Ct•) COI•LII)Wwrn-I Wi•I) Gwt4wv•xo• I• NORTHWRNGWRMAW/. Oliver Krone and Christian Schamweber ...... 174

TALON-LOCKINGIN THE RED-TAILEDHAWK. Robert W• Dickerman ...... 176

The RaptorResearch Foundation, Inc. gratefullyacknowledges funds and logisticalsupport providedby ArkansasState University to assistin the publicationof thejournal.