They're monk parakeets, which nest along telephone poles nearby.
Saskatchewan is on the main western flyway of waterfowl, songbirds, hawks, and owls, many of which nest in the province.
That system has limited the spread of foreign plants and animals that could harm native birds, most of which nest on the ground, and plants.
Mason bees are solitary insects which nest in hollows in wood or plant stems and use mud to make walled compartments for their eggs.
But zoologists at the University of Washington who study Magellanic penguins say the small birds, which nest along Argentina's coast, are turning up in record numbers in Brazil.
Residents like Ms. Miller believe that their property has been victimized by bands of marauding rats, which nest elsewhere and will only be eradicated by a coordinated attack.
To study which nest boxes birds prefer, in 1996 he placed 100 cedar nest boxes on the Town of Oyster Bay's 67-acre landfill in Old Bethpage.
It was given a hard time by birds known as sooty terns or wideawakes, which nest by the million on the island and won't move off the airstrip.
Exceptions include the bitterns, which nest among reeds; the shoebill, which nests on the ground; and the flamingos, which also nest at ground level, often in shallow water.
Aerial feeders, such as bee-eaters, which nest in burrows, may be considered to occupy two habitats, one for feeding and one for nesting.
For the eco-tourists who are beginning to outnumber the anglers in this peaceful village, hippos are, of course, an attraction, as are the loggerhead and leatherback turtles which nest on the Indian Ocean shore.
