LITTLE WIDOW TYRANT 145 
Mr. Barrows observed them in autumn on the 
Pigue (southern pampas) preparing for their migra- 
tion. ‘‘ Late in March,” he says, ‘‘ we found them in 
large scattered flocks, which collected in one place 
toward evening, and went through a series of aerial 
evolutions accompanied with vocal exercises of a 
varied and entertaining kind, lasting half an hour 
or more. 
““T presume this was in preparation for their 
northward (or westward ¢) migration, as we did not 
see them again after leaving this spot.” 
LITTLE WIDOW TYRANT 
Tenioptera irupero 
Above and beneath pure white; wings with the primaries black 
except the innermost, which are white at their bases and tipped 
with black, and secondaries which have narrow black shafts; broad 
end of the tail black; bill and feet black; two outer primaries 
acuminated ; length 7 inches. Female similar. 
THIS pretty species is found throughout the Argen- 
tine country, and is well known to the natives, and 
usually called Viudita (Little Widow) on account of 
its mourning colours. It is also sometimes curiously 
named Anjelito de las adnimas, from a superstitious 
notion due to the intense whiteness of its plu- 
mage and to its supposed habit of frequenting 
graveyards. 
I have on a few occasions found the Little Widow 
K I 
