Thank you for this link, appreciate it.
Not germane or claiming it to be, I am curious to know the distance covered by each species from their northern most summer range to the location of their demise?
If someone would care to speculate, I would appreciate it.
I'm a visual kinda person...
"There is, I believe, a much more plausible reason for large numbers of birds to die during migration: lack of food."
From the American Birding Association - It's worth going to the link; there's a ton of additional links backing the data, photos, and a body mass graph.
The data behind...
There's a pay-wall for the Las Cruces site, you get 3 free visits before you're locked out. The article is copied below.
Here's the YouTube link to the Condor sanctuary being destroyed by fire. It's the same vid shown in the article.
From the Las Cruces Sun News:
'Hundreds of thousands, if...