dietary analysis of the barn owl. why? barn owl decrease in pennsylvania and throughout its range 1...
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![Page 1: Dietary Analysis of the Barn Owl. Why? Barn Owl decrease in Pennsylvania and throughout its range 1 st PA Breeding Bird Atlas 1983-89](https://reader036.vdocuments.net/reader036/viewer/2022062713/56649f535503460f94c77676/html5/thumbnails/1.jpg)
Dietary Analysis of the Barn Owl
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Why?Barn Owl decrease in Pennsylvania and throughout its range
1st PA Breeding Bird Atlas 1983-89
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2nd atlas 2004-2008
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Barn Owl aka Monkey-Faced Owl
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Owl Pellets• Not poop!• Undigested bones and fur• Pellet ejection at the nest
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Meadow Vole Microtus pennsylvanicus
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Likely things you’ll find...
• Meadow Vole, Microtus pennsylvanicus• Masked Shrew, Sorex cinereus• Star-nosed Mole, Condylura cristata
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Meadow VoleMicrotus pennsylvanicus
• Herbivore• Widespread• Active year-round,
mostly nocturnal• ~5 pups, 1-5 times
per year
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Masked ShrewSorex cinereus
• Maximum size ~8 grams
• Active year round• May eat own
weight in a day
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Masked Shrew
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Sorex monticolus
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Sorex monticolus
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Star-nosed Mole
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Southern Red-Backed VoleMyodes gapperi
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House MouseMus musculus
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White-footed MousePeromyscus leucopus
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Deer MousePeromyscus maniculatus
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Meadow Jumping MouseZapus hudsonius
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Woodland Jumping MouseNapaeozapus insignis
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Northern Short-tailed ShrewBlarina brevicauda
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Masked ShrewSorex cinereus
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Eastern CottontailSylvilagus floridanus
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Eastern ChipmunkTamias striatus
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Norway RatRattus norvegicus
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European StarlingSturnus vulgaris
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House SparrowPasser domesticus