The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers): Ball State University Institutional Animal Care and Use Committee (IACUC) to capture and band birds (IACUC approval 437484-4). The areas where these two fledgling Cerulean Warblers were tracked resembled an uneven-aged forest stand. Boxelder in the MAV, from SOFIA, 2002 0 10 20 30 40 50 0 50 100 150 DBH, cm HT, m top top25 Mean ht Crown base bottom25 bottom CERWnest. Radio-telemetry data were collected from May to July 2015–2017, and microhabitat data on fledgling locations and random locations were collected during the same years in the month of July. Fledgling presence, when compared to random non-use sites, was positively correlated to presence of grapevines, greater vertical vegetation density, and greater ground and canopy cover. Also, the relative humidity on these western and southwestern slopes was found to be about 25% less than that on north and eastern slopes. The Cerulean Warbler is a single-brooded species that leaves its breeding sites in southern Indiana by the beginning of August (C.D. no more than one email per day or week based on your preferences. Models, along with AICc values, degrees of freedom, and weights for presence of fledgling Cerulean Warbler locations compared to random vegetation points. In three instances, fledglings moved southward and downstream from their nest locations (Fig. In 2015, radio-transmitters weighed 0.25 g without a harness. Cerulean warblers are strikingly beautiful. endobj Model-averaged coefficients (full average) for fledgling Cerulean Warbler versus random fledgling point models. As suggested by other studies, fledgling songbirds may utilize these areas after leaving the nest to avoid predation (Vitz & Rodewald, 2006; Vitz, Rodewald & VegaRivera, 2007; Stoleson, 2013). Fledgling locations were found to have greater vertical vegetation density, which is indicative of an uneven-aged forest structure. That’s the male Cerulean Warbler, a brilliant blue songbird with a cerulean neck band and streaks down the sides. Shrubs were only measured in a five meter radius of the center point. We attached transmitters using the Rappole & Tipton (1991) method with modifications designed by Streby et al. Fledglings were often captured by hand near the ground or by using an extending pole with an attached net. More research will need to be completed to determine how large of an area to manage for Cerulean Warblers and their fledgling habitat. Slope was calculated using a clinometer, 11.3 m from the center point in the uphill and downhill directions. Cerulean Warblers may place territories around areas with clumped white oak distributions. Analyses were performed in program R (R Core Team, 2015). Some birds chose to stay relatively close to their nests (Figs. Unrefuted hypothesis of habitat selection by cerulean warblers (Dendroica cerulea) in Tennessee. Over the past century, habitat loss and ... as they provide nest material and additional cover from predators. Report fish kills, wildlife emergencies, sightings, etc. Fledgling presence was strongly correlated with presence of grapevines (1.11; Table 3; Fig. Adult females are blue-green above, pale yellowish below. Females are equally well-dressed, wearing a dusky hue of blue-green. All continuous variables were scaled in the dataset to standardized z-scores. The Cerulean Warbler is a passerine in the family Parulidae. Warblers can be very wary, and even the rare appearance of a predator can discourage them from visiting. In the uneven-aged units, research cores consist of four 0.4 ha, two 1.2 ha and two 2 ha canopy openings.
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