Working with Florida Scrub-Jays is far more entertaining than any soap opera I’ve seen (admittedly, I have not seen many). Being a biologist who studies scrub-jays, though, naturally causes one to compare a day’s work to witnessing a soap opera, considering the drama that is seen every day. I have heard the phrase, ‘Jays of Our Lives’ used independently by a couple of my co-workers, in reference to the popular soap opera, ‘Days of Our Lives.’ So, I thought that I would describe some of what I have seen! I will do so in a series of posts, highlighting some of the interesting events and/or dramas that I have witnessed in the scrub, usually in relation to scrub-jays.
First off, you should know that Florida Scrub-jays are, appropriately, based on their name, only found in Florida. They are well-adapted to survive in ‘scrub,’ which primarily consists of oak species that are less than 2.5 meters tall. Florida is called ‘the lightning capital of the world,’ which historically caused regular wildfires, therefore maintaining habitat conditions that scrub-jays depend upon. However, we human beings have suppressed natural fire cycles and have converted much scrub habitat into housing developments, etc. Thus, Florida Scrub-jays are federally recognized as being ‘threatened’ due to the isolation of their existing habitats, which makes movement from one patch of habitat to the next very difficult for these birds that have short wings and a natural tendency to stay put. Therefore, I am part of a team that has been working to experimentally translocate these birds, so that we can understand if doing so will be an effective way to protect their genetic diversity (which is crucial step towards protecting scrub-jays from extinction). My job, as an employee of the Florida Fish and Wildlife Conservation Commission, is primarily to monitor how the birds we moved are doing. So, I get to spend a whole lot of time with scrub-jays!
You should also know that Florida Scrub-jays are ‘cooperative breeders,’ which means that offspring (most of the time) stick around to help their parents raise their siblings. Sound familiar? We humans, of course, have a similar life strategy. Just over 3% (or maybe slightly more, estimates vary) of bird species are currently known to be cooperative breeders. A similar percentage of mammals (humans are mammals) breed cooperatively. Therefore, both humans and scrub-jays are in the minority in this regard. Also, scrub-jays are in the ‘Corvid’ family, which includes ravens and crows. These birds have been described as ‘primates of the bird world,’ due to their large brains and impressive intelligence (see another post: ‘Bird Flew By: Thoughts on Consciousness’). This is yet another reason that these birds are similar to us humans. So, yes, scrub-jays are special! Of course, every species is special in some way….
Most of the birds that we are studying are uniquely banded so that we can tell who is who. Here is a picture of a color banded Scrub-jay:
Also, most of the birds that we moved to the new location have radio transmitters on them, so I can always find them (assuming that they have not gone on an adventure). Because of the transmitters and color bands, I can know ‘who is dating,’ ‘who is arguing,’ ‘who has died,’ and all of that other stuff that some people like to watch soap operas to see.
So, now that I have the background information out of the way, I will begin the story of Black/Silver – Hot Pink/Azure (a dashing male) and Black/Silver – Red/White (a beautiful female).
This pair is tough. We know that they have been together since 2013, and that Hot Pink/Azure is at least 6 years old and Red/White is at least 4 years old. Before they were translocated together, over 80% of their territory was deemed mostly useless to them by people who were trying to promote sand pine growth so that the pulp of these tress can later be harvested. The habitat that we moved them to is, as far I as I can tell, much better for scrub-jays than the habitat that they were taken from. We housed them in a cage for just under 36 hours before releasing them, so that they could become somewhat familiar with their surroundings before trying to settle in.
Initially, they refused to leave the cage, and stayed a night longer than we had wanted them to. When they finally did leave the cage, I followed them, and was pleased to see that they were behaving normally. Like usual, they were taking turns watching out for each other, while the other bird foraged. They did not seem to be bothered by their transmitters (no pulling on the antenna, no difficulty flying). All seemed well, until, 30 minutes after release, they wandered into the territory of another scrub-jay group. This was going to happen sooner or later, but luckily, I was there to see what happened. After I heard the first territorial calls, I saw Hot Pink/Azure and Red/White flying back towards the cage, with two other birds, a father-daughter pair, in hot pursuit. Soon, three other birds (a breeding pair and their helper) from a neighboring territory joined the chase, which noisily lasted for over an hour. Eventually, I saw Hot Pink/Azure, the male, chased to the northwest while Red/White was chased to the south. Ten minutes, twenty minutes, 40 minutes, passed. I was surprised, and a bit worried, to see that the pair were not reuniting. Because of their radio transmitters, I could tell that they were separated by about 400 meters. I needed to go check on another pair that we had recently released, so I had to leave. When I returned a couple hours later, they were still separated. They both, it seemed, were hiding alone, in foreign land, with hostile neighbors.
Will they reunite? Will they be able to form their own territory? Will they fly away and leave me with no idea where they went? Will they make a nest and lay eggs?
More next time, on Jays of Our Lives!!