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.

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

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

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