Artificial Habitats

Owly Infrastructure.

As their name suggests, burrowing owls nest in underground burrows typically dug by small mammals like ground squirrels, foxes, and badgers (although they are also capable of digging their own). In many parts of its migratory range, including Canada, the United States, Mexico, and Central America, the burrowing owl is listed as endangered, threatened, or a species of special concern. For burrowing owls, population decline is a complex problem but is closely related to habitat loss due to similar reported declines in burrowing mammals, compounded by human encroachment.

To mitigate the loss of burrowing owl habitats, humans have devised a variety of artificial burrow designs to mimic and act as stand-ins for naturally dug burrows. Typically, these designs comprise of large pails or drums that act as the nest space, connected to plastic tubing, which is reinforced at the entrances to prevent predators from entering or destroying the burrow.

Material for building artificial burrows. Photo by Chris Rogers/UW
Two shelters, placed back-to-back are installed in the nearly four-foot deep trough as Wild at Heart burrowing owl habitat coordinators demonstrate for a dozen ASU Polytechnic campus students and faculty how to construct new underground shelters for relocated birds on Friday, March 24, 2023. The birds were initially translocated to the undeveloped parts of the campus in May 2021. Unseasonably heavy rains flooded the habitats. Faculty and students from the College of Integrative Sciences and Arts, Wild at Heart raptor rescue and community volunteers installed weather-proof housing for the small raptors. The group installed six shelters, with plans to return the birds over the weekend.
Artificial burrows before backfill during burrowing owl resettlement at ASU Polytechnic campus in March 2023. Photo by Charlie Leight/ASU News

Burrowing owls must navigate a broken habitat. As a migratory species, burrowing owls are subject to different regulations as they cross human-made political borders throughout its range. This creates challenges for conservation efforts as the burrowing owls may face different levels of protection depending on where they are situated.

Designing burrowing owl habitat mitigations requires combining local knowledge of the environment with an understanding of burrowing owl needs, while negotiating with stakeholders to determine suitable spaces for burrows will be installed.