But O'Neill was more concerned by what he saw overhead--a caracara
, circling, the sight of which put O'Neill on edge.
The aim of this study was to investigate the plasma concentrations of enrofloxacin and its active metabolite ciprofloxacin in southern crested caracaras
plancus) to establish pharmacokinetic and pharmacodynamic relationships and the optimal dose for single intravenous (IV) and intramuscular (IM) administration of enrofloxacin.
Seed dispersal of Attalea phalerata (Palmae) by Crested Caracaras
plancus) in the pantanal and a review of frugivory by raptors.
Not as similar as thought: sexual dichromatism in Chimango Caracaras
is expressed in the exposed skin but not in the plumage.
Although formerly widespread from southern Mexico to the Amazon Basin, populations of Red-throated Caracaras
(Ibycter americanus) have plummeted over much of the species' range since the mid-20th century (Bierregaard 1994, FergusonLees and Christie 2001).
On islands oft the coast of Chubut province in Argentina, Kelp Gulls (Larus dominicanus) and Southern Caracaras
plancus) were observed taking eggs of White-headed Steamer-Ducks, which also select nest sites with higher proportion of shrub vegetation (Aguero et al.
Red-backed Hawks supply food to scavenging Chimango Caracaras
Attempted heterospecific kleptoparasitism by Crested Caracaras
Effects of double brooding on productivity of Crested Caracaras
The Red-throated Caracaras
continued to alarm call while diving at the eagle from above as it took flight.
On several occasions, Greater Anis also gave alarm calls when Yellow-headed Caracaras
(Milvago chimachima) flew over, but caracara
predation was not confirmed.
/Falcons Falconidae Red-throated Caracara
Ibycter americanus Laughing Falcon Herpetotheres cachinnans Barred Forest Falcon Micrastur ruficollis Slaty-backed Forest Falcon M.