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Full-Text Articles in Animal Sciences
Using Motion-Activated Trail Cameras To Study Diet And Productivity Of Cliff-Nesting Golden Eagles, Jordan T. Harrison, Michael N. Kochert, Benjamin P. Pauli, Julie A. Heath
Using Motion-Activated Trail Cameras To Study Diet And Productivity Of Cliff-Nesting Golden Eagles, Jordan T. Harrison, Michael N. Kochert, Benjamin P. Pauli, Julie A. Heath
Raptor Research Center Publications and Presentations
Studies of cliff-nesting raptors can be challenging because direct observations of nest contents are difficult. Our goals were to develop a protocol for installing motion-activated trail cameras at Golden Eagle (Aquila chrysaetos) nests to record diet information and productivity, and to estimate prey detection probability using different diet study methods. In 2014 and 2015, we installed cameras at 12 Golden Eagle nests with 18–42-d-old nestlings. Following installation, we monitored adult behavior using direct observation and post-installation image review. At two nests, adult eagles did not return to nests or exhibited behaviors suggesting avoidance of the cameras, but returned …
Repeated Observations Of Northern Goshawks Foraging As Terrestrial Predators, Robert A. Miller
Repeated Observations Of Northern Goshawks Foraging As Terrestrial Predators, Robert A. Miller
Intermountain Bird Observatory Publications and Presentations
The Northern Goshawk (Accipiter gentilis; hereafter goshawk) is a generalist predator occupying boreal and temperate forests of the Holarctic (Squires and Reynolds 1997). The diet of goshawks has been studied in many areas and varies substantially among study sites, but some avian and mammalian genera are consistently represented (Squires and Reynolds 1997, Squires and Kennedy 2006). Within the northern Great Basin of North America, the breeding-season diet of goshawks is often dominated by Belding's ground squirrels (Urocitellus beldingi, also known as Spermophilus beldingi; Younk and Bechard 1994, Miller et al. 2014). The local reliance upon …