I'd recommend deciding first who your target audience is. Are you writing it for the GIS crowd detailing technical issues of QGIS development? Or are you more interested in sharing your developed technique with folks interested in bird/nesting research?
Having decided on that, pick up set of clever keywords that define your topic and use Google Scholar or Web of Knowledge to identify journals that have already published something similar on the topic. Keep in mind that your article will be first seen by an editor, and it is her who decide about its future. Good editor takes care of it's audience and would like a piece that fits into the theme of the journal and will interest its readership.
Once you have a list of journals - you could go for the most prestigious one in your domain (that could mean rejection and resubmission to another journal) or lower this criteria and aim at less prestigious journal with hope of getting through the publishing machinery faster.
Last but not least PLOS ONE or cimilar journal could be (relatively fast, open access, but not cheapest) an option. GIS based articles seem to find their place in PLOS.