Monk parakeets are highly social birds. These bright green parrots live together in large groups, building sprawling, multifamily stick nests that often include chambers for dozens of individuals.

For this installment of "From the Archives," we answer a reader question about the monk parakeets and grackles in Austin.

Letters: Stephen Pound on using rubber serpents to deal with greedy, ring-necked parakeets. Plus letters from Dr Andrew Bodey and Nigel Walker ...

The findings, published in the journal Biology Letters, showed that strangers were more likely to approach each other with ...