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Reeding the Spectacled Owl (Pulsatrix Perspicillata)

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reeding the Spectacled Owl (Pulsatrix perspicillata) by Bruce W Bohmke, Curator ofBirds and Michael Macek, Bird Zoologist, St. Louis, Missouri Q5 The nest is a box made out of ply­ c he St. Louis Zoo first acquired (/) Q) wood which measures 50 cm x 50 cm o Spectacled Owls in 1986 for a dis­ .Y play in the Bird House. A commitment x 75 cm. The entrance is a hole 25 cm U ::J ..c was made at the time to ultimately in diameter near the top of the box. o >. .D house two pairs of owls. Both pairs of The nest is painted a dark brown and o(/) birds produced offspring over a five elevated so the hole is 1.2 m off the (5 ..c 0.... year period. This paper reports on the ground. Oak bark mulch is added to captive management of Spectacled the box to a depth of 20 cm. The nest Owls and their reproductive efforts. was put in the exhibit as soon as a pair Two captive reared female owls was introduced together. were acqUired from the Oklahoma In February of 1988, a single egg City Zoo and a wild caught male was was found on the floor of the exhibit obtained from the Cheyenne Moun­ and was removed for artificial incuba­ tain Zoo in Boulder, Colorado. In tion. The egg proved to be infertile. 1989, a second male was purchased The next egg was laid in late February from the San Diego Zoo. This bird was 1991 in the nest box. Egg laying was handreared. None of the birds had a preceded by the male feeding the history of reproduction prior to arriv­ female and increased vocalizations ing at St. Louis. between the pair. In late February, the The first pair of owls was housed in birds began spending an average of an indoor enclosure at the Bird four hours a day in the nest. The 30th House. The exhibit is triangular in of March was the first time one bird shape and measures 2.5 m x 2.5 m x was constantly in the box. A single 4 m. The two short walls are solid and egg was pulled for artificial incubation the long side is of piano or harp wire. on April 30 and the egg hatched on The height of the enclosure is 2.5 m. May 3. The estimated incubation per­ The ceiling has a skylight and incan­ iod was 35 days. The chick was raised descent lights provide a minimum without difficulty by bird department daylength of 12 hours. Live plants keepers. decorate the exhibit and are planted in OnJune 6, 1991, an egg was seen in a soil substrate. Fresh water is pro­ This im,1nature Spectacled Owl is nine weeks the nest box and a second egg was ofage. It 'will n10lt into its adultplun1age vided daily in a small dish. The birds noticed in subsequent nest checks. A during itsfirst n'lolt. It will lose its light head are fed dead mice once daily in the decision was made to leave these eggs and body coloration. late afternoon. in the nest to determine the adults' ability to rear their own offspring. The first chick was heard vocalizing on July 11 which was 36 days after the firSt egg was seen. A few weeks later a second chick was seen in the nest. During this period, the owls were dis­ turbed as little as possible during cleaning and feeding. Food was offered twice daily in sufficient quan­ tity to always have extra food in the exhibit. The next clutch was laid in March of 1992. The two egg clutch was left with the adults for incubation but neither egg hatched. When removed from the nest, both eggs were addled and fertil­ ity could not be determined. In December of the same year, courtship feeding was noticed and an egg was laid on the 14th ofJanuary. This egg was removed for artificial incubation The Spectacled Q'wl is a tropical owlfron1 Central and South America. The St. Louis Zoo has promptly. The egg was incubated at raisedyoungfrom twopairs in thepastfew years. 98°P dry bulb and 85°P wet bulb in a 4 September / October 1994 AMERICAN FEDERATION OF AVICULTURE Dedicated to conservation ofbird wildlife through encouragement of captive breeding programs, scientific research, and education of the general public. 1994 OFFICERS LAURELLA DESBOROUGH, President (51 0) 372-6174 • Fax (510) 372-0306 GARY CLIFTON, 1st Vice President (602) 830-4920, fax (602) 994-1707 RICK JORDAN, 2nd Vice President (61 0) 683-5701, fax (610) 683-9333 JIM HAWLEY, JR., Chief Financial Officer (602) 987-9206, fax (602) 987·3389 DIANA SKALSKY, Executive Secretary (407) 892-0643 LEGAL COUNSEL VICE PRESIDENT • LEGISLATIVE AFA office, P.O. Box 56218, Phoenix, AZ. 85079-6218/ (602) 484-0931 / FAX (602) 484-0109 MEMBER NATIONAL & INTERNATIONAL ORGANIZATIONS American Cockatiel Society, Inc. • Avicultural Society of America Gold Triangle Parrot Club, Canada • International Aviculturist Society Society of Parrot Breeders and Exhibitors • World Parrot Trust MEMBER CLUBS Northeastern Region NEW JERSEY FLORIDA (SOUTH) OHIO MISSOURI State coordinator: State coordinator: State coordinator: State coordinator: Linda S. Rubin, regional vice pres. Peg Whitney (908) 542-7126 Kathleen Harring (305) 258-2377 Dianne Holloway (419) 636-3882 (617) 469-0557 Central Jersey Bird Club Cage Bird Club of Charlotte County Beakers Bird Club Gateway Parrot Club CONNECTICUT Feather Fancier's Society Greater Brandon Avian Society Classic Feathers Greater Kansas City Avicultural State coordinator: The Real Macaw Parrot Club GEORGIA Firelands Exotic Bird Club Society Golden Crescent Cage Bird Club Missouri Cage Bird Association Gustave Seehorst (203) 745-3697 State coordinator. PENNSYLVANIA Miami Valley Bird Club Connecticut Association for Mimi Shepherd, DVM OKLAHOMA State coordinator: Mid-American Exotic Bird Society Aviculture, Inc. Debra Foote (814) 967-2866 (404) 248-8977 State coordinator: Northwest Ohio Exotic Bird Club Richard Bewley, (918) 366-7427 MAINE Anthracite Bird Club KENTUCKY Central Pennsylvania Cage Bird Club WISCONSIN Bird Fanciers of Oklahoma, Inc. State coordinator: State coordinator: Chester County Avian Society State coordinator: Central Oklahoma Bird Club Margaret Fisher Thomas B. Angel, Jr., DVM" Delaware Valley Bird Club David Bluma Oklahoma Avicultural Society Maine State Caged Bird Society (606) 371·4929 Erie Cage Bird Club Avian Insights Bird Club Oklahoma Cage Bird Society Central Kentucky Cage Bird Club MASSACHUSETTS Greater Pittsburgh Cage Bird Society Kenosha Exotic Bird Club State coordinator: TEXAS (NORTH) National Cockatiel Society MISSISSIPPI Madison Area Cagebird Association State coordinator: Nancy Meyers (413) 256-3129 Philadelphia Avicultural Society State coordinator: Wisconsin Cage Bird Club, Inc. Boston Cockatiel Society, Inc. Linda Smith (817) 790-8015 York Area Pet Bird Club Nancy Weaver (601) 853-2967 Dallas Cage Bird Society Exotic Cage Bird Society of Central Mississippi Bird Club North Central Region New England VIRGINIA Fort Worth Bird Club Massachusetts Cage Bird State coordinator: NORTH CAROLINA James McCabe, regional vice pres. Plano Exotic Birds Association Association, Inc. Dawn Kopl (703) 594-3841 State coordinator: (612) 753-5241, TEXAS (SOUTH) Blue Ridge Caged Bird Society Bob Beech (919) 855-8292 lax (612) 753-6772 State coordinator: NEW HAMPSHIRE Raleigh-Durham Caged Bird Society Commonwealth Avicultural Society IOWA Ray Wangler (210) 732-8025 State coordinator: National Capital Bird Club Alamo Exhibition Bird Club Susan Fellows (603) 887-4930 PUERTO RICO State coordinator: Parrot Breeders Association 01 Coordinator: Capitol City Cage Bird Club New Hampshire Avicultural Society Virginia Triangle Bird Breeders Club David Negron (809) 251-1153 Mid America Cagebird Society The Aviary Bird Club 01 Central Westwings 01 Austin NEW YORK Midwest Parrot Club State coordinator: Virginia SOUTH CAROLINA Charles Galusha (518) 686-5263 Tri-State Bird Club & Foundation State coordinator (acllng): MINNESOTA Northwestern Region Broome County Caged Bird Club Beth Rowan (803) 862-2852 State coord Inator: WEST VIRGINIA Aiken Bird Club Natalie Frumln-Weiss, Buffalo Hookbill Association State coordinator: Steve Estebo (612) 432-4758 Capital District Cage Bird Club Palmetto Cage Bird Club 01 Anderson Eclectus World regional vice pres. 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State coordinator: State coordinator: SOUTH DAKOTA State coordinator: VERMONT Carolyn McElroy (205) 664-2162 MONTANA Bird Club 01 Greater Birmingham Royce King (605) 393-1720 State coordinator: State coordinator: Central Alabama Avlcuiture Society Black Hills Cage Bird Club Peter Lowry (802) 754-6494 Mid-Eastern Region Laura Lee Neva (406) 322-4444 Rocket City Cage Bird Club Bob Smith, regional vice pres. South Central Region OREGON Mid-Atlantic Region FLORIDA (NORTH) (517) 764-5170, State coordinator: State coordinator: lax (517)764-5103 Richard Hazell, regional vice pres. Dotlle Sheffield (503) 564-9179 Kayla Snyder, regional vice. pres. Mary Glep (407) 892-1837 (316) 942-8864, Birds Exotic All Bird Club (215) 855-4463, Central Florida Bird Breeders ILLINOIS lax (316) 942-9030 Emerald Exotic Bird Club State coordinator:
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  • Spizaetus Neotropical Raptor Network Newsletter

    Spizaetus Neotropical Raptor Network Newsletter

    SPIZAETUS NEOTROPICAL RAPTOR NETWORK NEWSLETTER ISSUE 15 JUNE 2013 FALCO FEMORALIS BREEDING IN BRAZIL INCUBATING BEHAVIOR OF BUTEO VENTRALIS IN CHILE STUDYING PULSATRIX PERSPICILLATA IN COLOMBIA NEW RECORDS FOR FALCO RUFIGULARIS IN PERU RAPTOR MIGRATION IN EL SALVADOR SPIZAETUS NRN N EWSLETTER Issue 15 © June 2013 English Edition, ISSN 2157-8958 Cover Photo: Juvenile Falco femoralis. © Paul Spurling, The Peregrine Fund Translators/Editors: Marta Curti Graphic Design: Marta Curti Spizaetus: The Neotropical Raptor Network Newsletter © 2013. www.neotropicalraptors.org This newsletter may be reproduced, downloaded, and distributed for non-profit, non-commercial purposes. To republish any articles contained herein, please contact the corresponding authors directly. TABLE OF CONTENTS APLOMADO FALCON (FALCO FEMORALIS) BREEDING IN AN URBAN AREA IN NITERÓI, RIO DE JANEIRO, BRAZIL Antonio Carlos da Silva Bressan & Mosar Lemos.....................................................2 A NOTE ON INCUBATION BEHAVIOR OF RUFOUS-TAILED HAWK (BUTEO VENTRALIS) IN SOUTHERN CHILE Javier Medel Hidalgo, Tomás Rivas-Fuenzalida, Nicol Asciones-Contreras & Ricardo A. Figueroa R.......10 THE SPEctACLED OWL (PULSATRIX PERSPICILLATA) IN DRY FOREST FRAGMENTS IN THE VALLE DEL RÍO CAucA IN NEIRA, CALDAS, COLOMBIA Juan S. Restrepo Cardona, Alejandro López Betancur, & Sergio Córdoba-Córdoba................18 NEW RECORDS OF BAT FALCON (FALCO RUFIGULARIS) IN NORTHWESTERN PERU Segundo Crespo, Fernando Angulo Pratolongo, Alexander More & Jorge Novoa .......................24 FIRST HAWK MIGRATION FULL-SEASON COUNT IN EL SALVADOR Ricardo Pérez, Ernesto Ruelas Inzunza, García Geovanni, Jorge Ramos,& Keith Bildstein.........32 OF INTEREST..........................................................................................41 The NRN is a membership-based organization. Its goal is to aid the research and conservation of Neotropical raptors by promoting communication and collaboration among biologists, raptor enthusiasts, and other conservationists working in the Neotropics.