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WRP, an alternate ageing method: resources available


Ellen Paul
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From Jared Wolfe:

The calendar-based age classification system (widely used in North America) separates age classes based on hatch date relative to January 1st which, unfortunately, renders the system useless in tropical systems where breeding seasons often overlap January 1st. Based on relationships between molt extent and bird age, we developed a universal system of bird-age classification called the WRP system.

To help ornithologists effectively use the WRP system in the field and museum, I created a tutorial with photographic examples that reflect the majority of molt patterns exhibited by resident Neotropical birds. I will be adding photographic examples from North American as well as representative birds from central and east Africa in the near future. Make sure that you are familiar with the WRP system before reviewing photographic examples.

 

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