Sentences with word «vireo»

In contrast, the gray vireo increased the maximum frequency of its cheery tunes, increasing its frequency range.

For example, populations of warbling vireos (Vireo gilvus) dropped only 8.7 % when they contracted WNV.

We also caught sight of four different species of vireo; 15 species of warbler and both species of oriole found in our region.

A dynamic assessment (in a real example from Bransford's lab) asks students to use available resources to learn what it would take to prevent the white - eyed vireo from becoming endangered.

The plumbeous vireo increased the minimum frequency of the sounds in its songs, reducing the overall range of frequencies used.

Local land birds are friendly and abundant: the brightly coloured red - billed cinnamon hummingbird, the chestnut - headed mangrove warbler, the mangrove vireo, black catbird, golden - fronted woodpecker, hooded oriole, tropical mockingbird, tropical kingbird, white - collared seedeater and the ubiquitous boat - tailed grackle.

New world sparrows and their close relatives, and vireos generally died off only the first year after contracting the virus, whereas finches typically experienced persistent declines.

Francis says that his team has previously found that gray vireos avoid nesting in noisy environments, as Podos mentions.

To compare closely related species living in noisy environments, Francis and colleagues turned to plumbeous and gray vireo birds in woodland surrounding 26 gas - treatment sites — a mix of sites with noisy compressors as well as quiet control sites — in Rattlesnake Canyon Habitat Management Area in New Mexico in mid-2009.

The gray vireo makes itself heard above humanmade noise by increasing the maximum frequency of the sounds in its songs and by making them last longer.

You are likely to see a variety of migratory birds throughout the islands: the Kirkland's warbler, white - cheeked pintail, zenaida dove, great lizard cuckoo, Bahama woodstar, La Sagra's flycatcher, Bahama mockingbird, thick - billed vireo, bananaquit, stripe - headed tanager, black - faced grassquit, and the Greater Antillean bullfinch.

In the 230 - acre forest beyond steve kelling's wall - to - wall office windows, 50 species of migratory birds — warbling vireos, rose - breasted grosbeaks, cedar waxwings — have arrived overnight.

Before WNV arrived, red - eyed vireos, a species that's widely distributed across the continent, had an estimated population of 130 million birds.

But he believes the smaller number of nests could be due to the birds failing to secure a long - term mate in the noisy surroundings and that they still happily inhabit these environments, just like the plumbeous vireos.

Given the right season, you might observe a red - billed cinnamon hummingbird, the chestnut - headed mangrove warbler, the mangrove vireo, black catbird, golden - fronted woodpecker, hooded oriole, tropical mockingbird, tropical kingbird, white - collared seedeater, and the boat - tailed grackle.

The USGS research suggests that such an increase would result in a spike in gray vireos, but that hasn't been the case, according to Pierce.

Yet, it's an inviting spot for hundreds of migrating songbirds such as warblers, vireos, and thrushes passing through each year.

Of the seven birds studied, the gray vireo is expected to flourish, its habitat increasing anywhere from 58 to 71 percent by the end of the century.

Gray vireo, an inept opportunist When overgrazing and wildfires in New Mexico destroyed native grasses, they opened up real estate that was quickly inhabited by juniper trees, the nesting grounds of gray vireos, Pierce said.

He and his colleagues estimate that WNV has killed more than 15 million of these vireos, nearly one - third of their original population of 49 million.

Red - eyed vireo (Vireo olivaceus) populations, for instance, dropped about 29 % when they first encountered the disease.

Ultimately, nearly 37 million of these vireos likely died from the virus, the scientists say.

Then we both charged into a grassy old New Jersey orchard on the trail of a warbling vireo.

The duration of the plumbeous vireo's songs decreased with increasing noise, whereas the gray vireo's songs were nearly 1.5 times longer than usual in the noisiest areas.

«Because these two vireos are closely related, we expected them to respond in the same way to the noise disturbance,» Francis says.

Based on previous research into performance constraints for bird songs, the plumbeous vireo may not be able to sing as long when it increases the minimum frequency of its songs, the scientists speculate.

Common sightings include the white - eyed vireo, Yucatan vireo, common tody flycatcher, great Kiskadee, black and gray catbird bird, chachalaca, cinnamon hummingbird, parakeets, black hawk, yellow - bellied elaenia, laughing falcon, white - collared seed - eater, golden - fronted woodpecker, black - headed salator, blue herons, egret birds, roseate spoonbill and the hooded oriole.

As northern winter happends we also see orioles, warblers, vireos and other beautiful birds!

Lake Atitlan home for diferent endemic birds of the highlighds of Guatemala and Mexico states of Chiapas, also you can see several Hummingbirds including Rufous Sabrewing, Sparkling - tailed woodstar, Azure - crowned Hummingbird and other species like blue and White mockingbird, Blue - throated motmot, Horned guan, azure - rumped tanager, Crested Guan, Emerald toucanet, Prevost's Ground Sparrow, Chestnut - sided shrike - vireo.

According to the Caribbean Villas official website, the birds most often seen by those on the People Perch are: vireos, the common tody flycatcher, great Kiskadees, black catbirds, seedeaters, golden fronted woodpeckers, orioles and many others.

We had an unusually small group of 3 participants on the morning bird walk, but these lucky few were treated to an amazing spectacle of warblers, orioles, vireos, and other gorgeous spring migrants.

He would say, «Oh, warbling vireo in the distance,» and like a pocket fortune telling machine, Song Sleuth would present the information for a warbling vireo.