Ovenbird-PinPoint case study

ovenbird-1
Figure 1. Ovenbird with PinPoint-10
Archival
GPS tag - Maryland, US.

 

The strength of migratory connectivity, the degree to which migratory individuals are arranged geographically during two or more stages of the annual cycle, remains largely unknown for most migratory bird species. Yet, over 75% of bird species that breed in the northern temperate zone are migratory to some degree. Knowing the strength of migratory connectivity is critical for understanding population dynamics, seasonal interactions, life history strategies and implementing effective conservation strategies.


We captured Ovenbirds (Seiurus aurocapilla) at two widely separated breeding locations (New Hampshire and Maryland) and fitted them with archival GPS tags (PinPoint-10) to 1) identify the nonbreeding locations of individuals and 2) to quantify the strength of migratory connectivity.


PinPoint-10 tags were deployed in June 2013 and programmed to take location data every 28 days. PinPoint-10 tags were programmed to take location data on the same days to compare the location of individuals at the same point in time. Once recovered, data were downloaded to identify non-breeding locations.


Telemetry Device


• Model: GPS PinPoint 10
• Weight = 1.2g
• Attempts 10 GPS fixes per deployment
• Accuracy +/- 10m
• Flexible scheduling
• Rechargeable for repeat deploymentse

Insights


i) Individuals from the two breeding locations exhibit no overlap in non-breeding season location.
ii) Ovenbirds exhibit strong migratory connectivity - mantel test (r=0.82).
iii) Individuals breeding in Maryland tended to be further from their breeding grounds on 23 September (period during fall equinox when light-level geolocator latitudinal estimates are unreliable) than individuals breeding in New Hampshire


These findings drastically improve our understanding of migratory connectivity for the Ovenbird and identifies, with unrivaled accuracy, the non-breeding location of individuals captured during the breeding season.

ovenbird-2


Figure 2. The mean latitudinal difference from the breeding location on 23 September 2013 of Ovenbirds captured in New Hampshire (HBEF, light gray) and Maryland (JB, dark gray). Ovenbirds breeding in Maryland tended to be further from the breeding location in late September than birds breeding in New Hampshire. The mean difference (solid line) and 95% confidence intervals (dotted lines) are shown in the upper right inset.

 
ovenbird-3

 

   

Figure 3. The non-breeding locations of Ovenbirds captured in New Hampshire (yellow; n=6 birds) and Maryland (purple; n=11 birds) identified using PinPoint-10 archival GPS tags. The inset shows the territory level information gathered from the tags. The inset individual is highlighted with a circle.

Publication


Hallworth, M. T., L. Meczarski, M. Vandentillaart and P. P. Marra. in prep. Migratory connectivity of a Neotropical migratory songbird using new technologies: archival Global Positioning System (GPS) tags.

 

To the whole team at Sirtrack,

I wanted to personally send you our 2011 Thank you video which highlights the achievements we have made together for the people and animals at N/a’an ku sê. Thank you for everything you’ve done in 2011 to help make this happen – from sponsoring collars to help us safely release threatened cheetahs and sharing our news and stories with your clients - here’s to a successful 2012 together!

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With best wishes,

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TTo the whole team at Sirtrack,

I wanted to personally send you our 2011 Thank you video which highlights the achievements we have made together for the people and animals at N/a’an ku sê. Thank you for everything you’ve done in 2011 to help make this happen – from sponsoring collars to help us safely release threatened cheetahs and sharing our news and stories with your clients - here’s to a successful 2012 together!

Please enjoy it and feel proud of the difference you’ve made:

http://www.youtube.com/watch?v=k-wHpBVytrI&feature=plcp&context=C300d1dbUDOEgsToPDskK2BT7ILrG91-MWctn4Pyx9

Just to let you know, our Wild Animal Orphans TV series premieres on Tuesday 6th March on Animal Planet across Africa, as well as in Holland, Belgium, Finland, Norway, Denmark, Sweden, Greece, Croatia, Hungary, Turkey, many other European countries, across the Middle East and Russia. I’m currently seeing how I can get you a copy of Groen so you can see the exposure you got. I might have to wait until all 13 episodes of WAO is aired before sending to you, hope that’s ok.

 

With best wishes,

 

Lucy Hale

Fundraising and Marketing Manager

N/a’an ku se Foundation

www.naankuse.como the whole team at Sirtrack,

I wanted to personally send you our 2011 Thank you video which highlights the achievements we have made together for the people and animals at N/a’an ku sê. Thank you for everything you’ve done in 2011 to help make this happen – from sponsoring collars to help us safely release threatened cheetahs and sharing our news and stories with your clients - here’s to a successful 2012 together!

Please enjoy it and feel proud of the difference you’ve made:

http://www.youtube.com/watch?v=k-wHpBVytrI&feature=plcp&context=C300d1dbUDOEgsToPDskK2BT7ILrG91-MWctn4Pyx9

Just to let you know, our Wild Animal Orphans TV series premieres on Tuesday 6th March on Animal Planet across Africa, as well as in Holland, Belgium, Finland, Norway, Denmark, Sweden, Greece, Croatia, Hungary, Turkey, many other European countries, across the Middle East and Russia. I’m currently seeing how I can get you a copy of Groen so you can see the exposure you got. I might have to wait until all 13 episodes of WAO is aired before sending to you, hope that’s ok.

 

With best wishes,

 

Lucy Hale

Fundraising and Marketing Manager

N/a’an ku se Foundation

www.naankuse.com