Bird species and abundances in fruit crops and implications for bird management

Hannay, Melissa B.; Boulanger, Jason R.; Curtis, Paul D.; Eaton, Rachael A.; Hawes, Benjamin C.; Leigh, Deanna; Rossetti, Cody A.; Steensma, Karen M. M.; Lindell, Catherine A.

doi:10.1016/j.cropro.2019.02.015

Cited by 15 publications

(6 citation statements)

References 22 publications

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“…In wine grape vineyards, the presence of birds in crop areas is also well recorded, such as in two farms of Canada, where 8 species and more than 1.000 individuals were recorded, many with foraging behavior [ 167 ]. Another study in the USA reported the presence of 29 fruit-eating avian species in different fruit crops, such as grapes, apples, blueberries and sweet cherries, some of them in large numbers [ 174 ]. Hence, a high diversity of birds (carnivorous, herbivorous, insectivorous and omnivorous) tend to be found in these areas.…”

Section: Use Of Crop Areas and Adjacent Areas By Birdsmentioning

confidence: 99%

Aspergillosis, Avian Species and the One Health Perspective: The Possible Importance of Birds in Azole Resistance

et al. 2020

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The One Health context considers health based on three pillars: humans, animals, and environment. This approach is a strong ally in the surveillance of infectious diseases and in the development of prevention strategies. Aspergillus spp. are fungi that fit substantially in this context, in view of their ubiquity, as well as their importance as plant pathogens, and potentially fatal pathogens for, particularly, humans and avian species. In addition, the emergence of azole resistance, mainly in Aspergillus fumigatus sensu stricto, and the proven role of fungicides widely used on crops, reinforces the need for a multidisciplinary approach to this problem. Avian species are involved in short and long distance travel between different types of landscapes, such as agricultural fields, natural environments and urban environments. Thus, birds can play an important role in the dispersion of Aspergillus, and of special concern, azole-resistant strains. In addition, some bird species are particularly susceptible to aspergillosis. Therefore, avian aspergillosis could be considered as an environmental health indicator. In this review, aspergillosis in humans and birds will be discussed, with focus on the presence of Aspergillus in the environment. We will relate these issues with the emergence of azole resistance on Aspergillus. These topics will be therefore considered and reviewed from the “One Health” perspective.

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Section: Use Of Crop Areas and Adjacent Areas By Birdsmentioning

confidence: 99%

Aspergillosis, Avian Species and the One Health Perspective: The Possible Importance of Birds in Azole Resistance

et al. 2020

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“…We performed point counts in blocks in 2012 and 2013, as close in time before harvest as possible, in three regions: Michigan, New York, and the Pacific Northwest. We only present abundance estimates for Michigan in this manuscript, because of our focus here on Michigan; estimates for other regions are in Hannay et al [14]; please see the data analysis section for more details. In most of the cases, two observers conducted independent point counts simultaneously, not communicating during or after the count [15].…”

Section: Sampling For Fruit-eating Bird Activitymentioning

confidence: 99%

“…Interior and edge points were considered temporal replicates. Please see Hannay et al [14] for additional details about point count sampling.…”

Section: Sampling For Fruit-eating Bird Activitymentioning

confidence: 99%

“…A bird species was classified as fruit-eating if it met one of two criteria: (1) it was observed eating fruit during the observations we conducted for this and previous studies [14], (2) or fruit consumption was documented in the Birds of North American entry for the species [16].…”

Section: Sampling For Fruit-eating Bird Activitymentioning

confidence: 99%

“…Both models had a fit of 1.00 +/− 0.02, and a "Bayesian p-value" within 0.02 of 0.5, where values around 0.5 are considered ideal [20]. For additional details about the estimation process, please see Hannay et al [14].…”

Section: Data Management and Statistical Analysesmentioning

confidence: 99%

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Bird Management in Blueberries and Grapes

2018

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Bird damage to fruit is a long-standing challenge for growers that imposes significant costs because of yield losses and grower efforts to manage birds. We measured bird damage in ‘Bluecrop’ blueberry fields and Pinot noir vineyards in 2012–2014 in Michigan to investigate how year, grower, and forest cover influenced the proportions of bird damage. We tested whether inflatable tubemen (2013–2014) and a methyl anthranilate spray (2015) reduced bird damage in blueberries, and tested the deterrent effect of inflatable tubemen in grapes (2014). Years when crop yield was lower tended to have a higher damage percentage; for blueberries, bird damage was highest in 2012, and in grapes, damage was highest in 2012 and 2014. Neither blueberry fields nor vineyards with inflatable tubemen showed significantly reduced bird damage, although the blueberry fields showed a non-significant trend toward lower damage in the tubemen blocks. Blueberry field halves treated with the methyl anthranilate spray had equivalent bird damage to untreated halves. Our results correspond to previous work showing that percent bird damage varies by year, which was likely because bird consumption of fruit is relatively constant over time, while fruit yield varies. Fruit growers should expect a higher proportion of bird damage in low-fruit contexts, such as low-yield years, and prepare to invest more in bird management at those times. Investigating patterns of bird damage and testing deterrent strategies remain challenges. Bird activity is spatially and temporally variable, and birds’ mobility necessitates tests at large scales.

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