EL ROJO GRANDE RANCH
A DIGITAL RANCH
– ON THE WORLD WIDE WEB –
WHERE YOU CAN VISIT, PONDER
IT WAS A SPECIAL TIME, UNIQUE AND CLEARLY
ONE OF A KIND
AN ARIZONA RANCH
LOVED BY MANY
Enjoy this beautiful bird survey, by permission of the author.
Bird Survey Kristen Pearson Project Description: The purpose of this project was to survey all the bird species that use the diverse habitats of El Rojo Grande Ranch.
We sought to discover what habitat types each species were using, what time of year they occurred, and through observation, prior knowledge and literature research, what ecological role each species filled. This data would then provide knowledge of the diversity and ecological health of the ranch, while providing viewers a bird species checklist to aid in finding the birds in their personal bird identification guide. This data will also allow for insight into habitat limitations that could be improved on for greater abundance and diversity of certain bird species. Methods: Surveys We conducted 10 morning surveys and 1 evening survey, approximately one per month during March through November 2005. The early morning surveys were conducted ½ hour after sunrise and ended by eleven a.m. when the bird activity decreased. The ranch was broken up into 5 distinct habitat patches; riparian, pinyon-juniper, mesquite, picnic area and house/grounds. Surveys were conducted by walking slowly through the habitat patches listening and looking for all bird species. When a bird was either heard or seen, we recorded the species name, the number of individuals, the sex if known, which habitat type it was observed in and commented on any behaviors such as breeding, singing, feeding. The one evening survey was conducted in May, 1 hour before sunset. We surveyed for owls, which are active at night, by playing tapes of owl calls that encourage nearby owls to respond by calling back. We played calls of three different owl species, the Great Horned Owl, Western Screech Owl and Flammulated Owl, which are all likely to be found in pinyon-juniper habitat around the Sedona area. We surveyed along the red rock outcrop and followed the west road along the riparian corridor, stopping every 100m to play species calls, each three times with 1 minute between to allow for a response. If owls were detected, we recorded the species, number heard, in which habitat they were detected and any observed behavioral comments. Comprehensive list of species: The following is a list of all birds seen and heard during our surveys. We classified their abundance, seasonality, habitat and dietary requirements with the following designation: Abundance: Common- (c) present in proper habitat and season in moderate to large numbers Uncommon-(u) present in proper habitat and season in small to moderate numbers Rare-(r) present in proper habitat singly or in very small numbers Season: Winter-(w) present only in winter Summer-(s) present only in summer Migrant-(m) present in spring or fall Permanent-(p) year round resident Habitat: Mesquite=M Pinyon-Juniper=PJ Riparian=R Picnic Area=P House/Grounds=HG House Finch nestlings at El Rojo Dietary requirements: Predator-preys on small birds, mammals, reptiles or fish Granivore-eats seeds Frugivore-eats fruit Insectivore-eats insects/arthropods Nectarivore-eats nectar Omnivore-may eat seeds, fruit, insects and some small vertebrates Species Abundance Season Habitat Diet M PJ R P HG American Kestrel r p √ √ Predator American Robin u w √ √ Insectivore Frugivore Anna’s hummingbird c p √ √ Nectarivore Insectivore Ash-throated flycatcher c s √ √ √ √ Omnivore Band-tailed Pigeon r m √ Granivore Frugivore Belted Kingfisher r* p √ Predator Insectivore Bewicks Wren c p √ √ √ √ Insectivore Species Abundance Season Habitat Diet M PJ R P HG Black-chinned Hummingbird c s √ √ √ Nectarivore Insectivore Black-chinned Sparrow u s √ Granivore Insectivore Black-headed Grosbeak u s √ √ Omnivore Black-throated gray Warbler r m, s √ Insectivore Black Phoebe c p √ √ Insectivore Brown-crested Flycatcher r s √ Insectivore Frugivore Brown-headed Cowbird u s √ √ Granivore Insectivore Blue Grosbeak u s √ √ √ Insectivore Granivore Bronzed Cowbird r s √ √ Granivore Insectivore Brewers Sparrow u m √ Granivore Insectivore Broad-tailed Hummingbird c s √ √ Nectarivore Black-throated Sparrow c s √ √ √ Insectivore Granivore Bullock’s Oriole u s √ Insectivore Frugivore Nectarivore Bushtit c p √ √ Insectivore Canyon Towhee c p √ √ √ √ Granivore Insectivore Canyon Wren u p √ √ Insectivore Chipping Sparrow c p √ √ √ Granivore Common Black Hawk r s √ Predator Cliff Swallow r s Insectivore *=depends on available water in Dry Beaver Creek Species Abundance Season Habitat Diet M PJ R P HG Coppers Hawk c p √ √ √ Predator Common Poorwill u s √ Insectivore Common Raven c p √ √ Omnivore Crissal Thrasher u p √ √ Insectivore Dark eyed Junco c w √ √ √ Granivore Gambels Quail c p √ √ √ √ √ Granivore Frugivore Gila Woodpecker c p √ Omnivores Gray Flycatcher u s √ √ Insectivore Great Blue Heron r* p √ Predator Great Horned Owl u p √ Predator Greater Roadrunner u p √ √ Omnivore Great-tailed Grackle u s √ Omnivore Hermit Thrush r m √ √ Insectivore Frugivore House Finch c p √ √ √ √ √ Granivore House Sparrow u p √ Granivore Insectivore Juniper Titmouse c p √ √ Granivore Insectivore Ladder-backed Woodpecker c p √ √ √ Insectivore Lark Sparrow u m, s √ Granivore Lazuli Bunting u m √ Insectivore Frugivore Granivore Lesser Goldfinch c p √ √ √ √ Granivore Lincoln Sparrow u m √ √ Granivore Insectivore Loggerhead Shrike m r √ Insectivore Predator *=depends on available water in Dry Beaver Creek Species Abundance Season Habitat Diet M PJ R P HG Lucy’s Warbler c s √ √ √ Insectivore MacGivillarys Warbler r m √ Insectivore Mallard r* p √ Insectivore Granivore Aquatic Vegetation Mourning Dove c p √ √ √ √ √ Granivore Northern Cardinal c p √ √ √ √ Granivore Northern Flicker c w √ √ Insectivore Northern Mockingbird c s √ √ √ Insectivore Frugivore Northern Rough-winged Swallow r s √ Insectivore Phainopepla u m, s √ √ √ Frugivore Insectivore Pine Siskin c w √ √ granivore Red-naped Sapsucker r w √ √ Insectivore Frugivore Sap-eating Red-tailed Hawk u p √ √ √ Predator Red-winged Blackbird u w √ Granivore Insectivore Rock Wren c p √ √ √ Insectivore Ruby-crowned Kinglet c m, w √ √ √ √ Insectivore Rufous-crowned Sparrow r p √ Granivore Insectivore Say’s Phoebe c p √ √ √ √ √ Insectivore Scotts Oriole c s √ √ √ Insectivore Frugivore Nectarivore Spotted Towhee u p √ √ Granivore Insectivore Frugivore Stellar’s Jay r w √ Omnivore Summer Tanager r s √ Insectivore Townsend’s Solitaire u w √ Frugivore *=depends on available water in Dry Beaver Creek Species Abundance Season Habitat Diet M PJ R P HG Turkey Vulture u s √ Scavenger Verdin u w √ √ Insectivore Violet green Swallow c m √ √ √ Insectivore Warbling Vireo u m √ √ Insectivore Western Bluebird c w √ √ √ √ Insectivore Frugivore Western Meadowlark u m Insectivore Granivore Western Kingbird c s √ √ √ √ Insectivore Western Scrub Jay c p √ √ √ Omnivore Western Tanager u s √ √ √ Insectivore Frugivore White-crowned Sparrow c w √ √ √ √ √ Granivore White-throated Swift c m, s √ √ √ √ √ Insectivore Yellow Warbler r m √ √ Insectivore Yellow-rumped Warbler u m, w √ √ √ Insectivore Assessments:
During our surveys 83 different species were recorded. Thirty six percent of these species are permanent year round residents, 30% are strictly summer breeders, 20% are migratory, and the remaining 14% are winter residents. The broad diversity of bird species found on El Rojo Grande Ranch may be partly due to the proximity to Oak Creek Canyon, a designated Important Bird Area by the National Audobon Society, which serves as a significant migration corridor and is a premier riparian habitat corridor. El Rojo Grande Ranch benefits by having many migrating species pass through that are on route to using this important Oak Creek canyon corridor. Additionally, the diversity of habitats at El Rojo Grande Ranch are important to the bird community, with the Dry Beaver Creek riparian corridor largely responsible for the bird diversity. In Arizona, 90% of all bird species which occur regularly in the Colorado Plateau region routinely use riparian areas for food, water, cover or migration routes. During our surveys, 70% of the species counted were observed using the riparian area, and 20% of these species are dependent upon using riparian habitats for breeding and migrating. While the riparian habitat is important, the presence of water is also essential for some species that rely on pools for foraging. The abundance of water flowing through Dry Beaver Creek in the spring of 2005 and water holes which remained until late summer allowed species such as the Mallard, Great Blue Heron and Belted Kingfisher to visit El Rojo. The mesquite and pinyon-juniper habitats also supported many bird species that rely on desert scrub for breeding habitat such as the Black-throated Sparrow which was found nesting in shrubs and cacti throughout the mesquite scrub areas of the ranch. Scrub Jays, Scotts Orioles and Northern Mockingbirds were also common breeders in both the mesquite and pinyon-juniper habitats. Scrub Jay female incubating eggs on nest The red rock outcrop behind the housing and picnic area not only provides a spectacular scenic backdrop to the property, it is also an interesting spot for birds. Great Horned Owls were observed nesting and raising young in a nest high on a cliff shelf. Cliff Swallows built mud nests along cliff overhangs and Canyon Wrens filled the cracks and crevices with their beautiful musical cascade of liquid song. While much of the grounds around the housing and barn areas did not support a diverse or abundant bird community, the picnic area was a hotspot for many of the migrant birds recorded at the ranch. The regularly watered lush grass, dense shrubs and trees provide a unique resource for migrants traveling through relatively dry lands. One hollowed out rock near a water spigot held water where many different species were observed coming in for a drink.
Recommendations: Riparian corridor protection: Because the Dry Beaver Creek riparian corridor is so important to both breeding and migrating bird species, it is imperative to protect this habitat from degradation. Exclusion of cattle grazing would be a crucial step in protecting the habitat by lessening their impact of soil erosion and trampling and eating of the riparian vegetation. Additionally exotic species monitoring and eradication, specifically of the exotic and invasive Tamarisk or Salt Cedar (Tamarix ramosissima), would be important for the maintenance of a healthy riparian system. Increasing food sources for birds: Planting native shrubs and flowers that provide important sources of fruiting berries, seeds and nectar is a good way to support and increase bird diversity and abundance. You can find many sources of native plants online or at local native plant nurseries. Another idea is to put up hummingbird feeders and seed feeders, which not only encourages hungry migrant birds to stop in for a rest, it also provides an easy way to view birds if placed close to benches or within view of a window. However, don’t place bird feeders too close to windows or you may cause fatalities from birds flying into the glass. To enjoy viewing birds at your feeders or out and about on the property, obtain a good bird identification guide to use with the supplemented bird checklist. An excellent book is Sibleys guide to Birds by Allen Sibley. Increasing nest sites for cavity nesters: Ten different cavity nesting species breed in El Rojo habitat. These species use naturally made crevices and holes in trees or make their own holes for nesting and raising their young. Unless there is adequate diversity in tree sizes and dead snags or dead branches in which to build these cavities, nest sites may limit the number of birds that can utilize suitable habitat. Putting up nest boxes not only increases breeding sites for birds, it can also be a fun and educational tool for watching breeding behavior. The following is a list of birds that use cavity nests: American Kestrel Ash-throated Flycatcher Bewicks Wren-will use next boxes but doesn’t exclusively use cavities. Brown-crested Flycatcher Gila Woodpecker House Sparrow-because it is an exotic invasive species you don’t want to encourage the nesting of this species, so place boxes far away from house and barn areas. Juniper Titmouse Lucy’s Warbler- included on Audobon’s Watchlist because of decreasing populations throughout its range. Ladder-backed Woodpecker There are many websites that offer detailed plans for the building and placement of nest boxes such as: http://members.tripod.com/Tommy51/designs.html http://lancaster.unl.edu/enviro/pest/factsheets/024-99.htm There are also websites were you can buy prefabricated boxes specific to different species: http://www.coveside.bix/woodpecker-houses.htm