Black-billed Magpies Constructing Their Nest
This post is largely about behavior. The image quality ranges from good to mediocre but I think each photo contributes something to a better understanding of magpies. Black-billed Magpies begin nest-building as early as January and these particular birds have been at it for several weeks now. Actually, in this case it’s more a “remodel” than it is “new construction” since this nest has been used for at least the last three years. All of these photos have been taken this week, which accounts for the relatively bright snow and ice background in some of the shots. 1/2500, f/7.1, ISO 500, 500 f/4, natural light One of the first things you may notice is the fact that sometimes these Black-billed Magpies don’t seem to have black bills. Part of nest construction involves mud gathering and the drying mud on the bill can significantly alter the appearance of the bill. 1/2500, f/7.1, ISO 500, 500 f/4, natural light Both sexes contribute to nest construction and they’re quite industrious in their efforts. The size of the twigs they bring in is often impressive. 1/4000, f/7.1, ISO 500, 500 f/4, natural light The nest is buried deep in a greasewood bush at about eye level for me. Typically a bird bringing in construction material will land on a nearby perch and look over the nest for a few moments – seeming to plan placement of the twig and an approach path through the myriad of vertical greasewood stems that present significant obstacles to proper placement of such an unwieldy…