[cartan]

On average, the decline in mass of spring migrants over the 46 year study was just 1.3%," says Dr Buskirk.

"For a 10g warbler that's a loss of just 130mg."

But some species are losing more weight.

For example, the rose-breasted grosbeak has declined in mass by about 4%, while the Kentucky warbler has dropped 3.3% in weight and the scarlet tanager 2.3%.

Looks like academic standards are declining. This is well within error of measurement area. It's not only the social science faculties that are full of morons today. It is spreading. Idiocracy is approaching.

[DBrow]

Hmm, global warming causes bias in balances used in the field!

Or, are the birds killed, then weighed, or captured, weighed in the field, or captured, brought to a lab then weighed?

a simple shift in protocols or in the precision and accuracy of the equipment could account for a 4% delta.

[UCANSEE2]

So the birds are losing some of their obesity.

You would think that would make liberals happy. Especially Michelle Obama.

Now, if she could just get ‘the children’ to eat like birds.

[TexGuy]

On average, the decline in mass of spring migrants over the 46 year study was just 1.3%," says Dr Buskirk.

"For a 10g warbler that's a loss of just 130mg."

Yeah, but did they account for the bird's "Poopy time".