Barred Forest Falcon (Micrastur ruficollis) Science Article 3 abstract The Barred Forest-Falcon (Micrastur ruficollis) and Collared Forest-Falcon (M. semitorquatus) are cavity nesters with similar geographic distributions but differences in body size. For Barred and Collared forest-falcons, nest height averaged 17 and 20 m above ground, nest tree dbh averaged 95 and 167 cm, and nest […]
Category: Falconiformes
Photos of Micrastur species in Peru, covering the Surinam species
Barred Forest Falcon (Micrastur ruficollis) Science Article 4 abstract Five of the seven species of the mysterious Forest-falcons (Micrastur: Falconidae) occur en Los Amigos river basin, Madre de Dios, Peru Ursula Valdez, Boletin SAO Vol. XVI (No. 02) – Dic. 2006 Download article download full text (pdf)
Density, habitat selection and breeding successof an insular population of Barbary FalconFalco peregrinus pelegrinoides
Barbary Falcon (Falco pelegrinoides) Science Article 1 abstract We studied density, habitat selection and reproduction of Barbary FalconsFalco peregrinus pelegrinoides on Tenerife Island during 2004 and 2005. Atotal of 26 breeding pairs were counted, all of them occupying naturalcliffs around the island. Density observed was 1.27 pairs/100 km2, andwas positively correlated with cliff availability. Mean […]
THE DIET OF THE APLOMADO FALCON (FALCO FEMORALIS)IN EASTERN MEXICO
Aplomado Falcon (Falco femoralis) Science Article 4 abstract describe here breeding season diets of Aplomado Falcons (F&co femoralis) at 18 sites in Veracruz, Campeche, and Chiapas, Mexico, based on 256 animals in prey remains and 234 prey that I detected while watching the falcons’ feeding behavior. Birds comprised 94% of individuals in prey remains, but […]
HUNTING ASSOCIATION BETWEEN THE APLOMADO FALCON (FALCO FEMORALIS) AND THE MANED WOLF (CHRYSOCYON BRACHYURUS) IN EMAS NATIONAL PARK, CENTRAL BRAZIL
Aplomado Falcon (Falco femoralis) Science Article 1 abstract Hunting associations between Aplomado Falcons (Falco femoralis) and maned wolf (Chrysocyon brachyurui) were observed in six occasions in Emas National Park. central Brazil. Falcons were successful in 25% of their hunting attempts. This association benefits the birds that hunt flushing tinamous missed by the wolf’s attack. The […]
APLOMADO FALCON STEALS PREY FROM LITTLE BLUE HERON
Aplomado Falcon (Falco femoralis) Science Article 5 abstract A juvenile male Aplomado Falcon (Falcofemoralis) was observed to steal crayfish(Cambarus diogenes) from Little Blue Herons (Egretta caerulea). Crayfish are not known tobe a common prey item of the Aplomado Falcon. To our knowledge this is the first instanceof piracy reported for this falcon. Falcons of the […]
Wild-reared aplomado falcons survive and recruit athigher rates than hacked falcons in a common environment
Aplomado Falcon (Falco femoralis) Science Article 3 abstract The northern aplomado falcon (Falco femoralis septentrionalis) has been the subject of a large-scale reintroduction effort conducted by The Peregrine Fund since 1993. Intensive monitoring during 2002-2004 revealed approximately 38 breeding pairs and numerous non-territorial individuals in two study areas centered on Matagorda Island National Wildlife Refuge […]
Amur Falcon is now an annual visitor to Seychelles
Amur Falcon (Falco amurensis) Science Article 1 abstract Amur Falcon was not recorded in Seychelles until 1995. It has now been reportedannually since 2001 with a total of 28 records accepted by Seychelles Bird RecordsCommittee (SBRC) unknown, Seychelles Bird Records Committee Download article download full text (pdf)
Raptor migration at Hoang Lien Nature Reserve,northern Vietnam
Amur Falcon (Falco amurensis) Science Article 2 abstract Between 13 and 25 October 1997, a total of 1,884 migrating raptors were recorded at HoangLien Nature Reserve, Lao Cai province, Vietnam. Although sporadic raptor migration recordsfrom Vietnam exist, a migration of this scale has never been previously recorded. ANDREW W. TORDOFF, FORKTAIL 18 (2002): 45-48 Download […]
Misdirected incubation in American Kestrels: a case of competition for nest sites?
American Kestrel (Falco sparverius) Science Article 20 abstract Reports of birds exhibiting unusual incubation behaviors are perhaps not surprising, giventhe wide variety of physical properties that can elicit incubation responses in birds (seeBaerends and Drent 1982). Birds that normally are solitary nesters occasionally have beendocumented sharing the same nest site (Terres 1982, Fournier and Hines […]