9 May 2009
It has been another wet day here with the sun briefly presenting itself between the clouds in the morning. The male is continuing to catch fish roughly twice a day and is keeping the female well fed. Yesterday evening at 20:08 he was watched diving down and successfully catching a fish in front of the hide but, luckily for the fish, the male dropped it whilst turning it around for the flight back and the fish managed to make a break for freedom. The male refused to be defeated by a slippery fish and returned 40 minutes later with a fish he had already feasted upon before delivering it to the female. He has been very busy this morning collecting sticks for the nest and rearranging them into suitable positions. Whilst the male was collecting more sticks, the female ripped off the lichens which she then used to insulate the eggs. They are both looking pretty damp just now but hopefully the weather will get dryer over the following days ready for the first egg to hatch on hopefully 14 May.
We were a bit concerned about the wellbeing of some of our small birds when a suspected parasite named trichomoniasis, infecting predominantly finches, possibly infected some of our birds resulting in us removing the birdfeeders from our viewing window.
The trichomonad parasite will take up residence in the upper intestine where it can then block the throats of birds causing them to be unable to swallow food, resulting in death through starvation. The parasite is transmitted between birds indirectly through eating or drinking sources which have been contaminated with regurgitated saliva or directly between birds whilst feeding each other with regurgitated food during the breeding season. The parasite may also spread through the faeces of birds. An infected bird will look lethargic and puffed up but may also show signs of salivation, food regurgitation and difficulty breathing or swallowing. The feeders have been cleaned and sterilised and will be removed for the following two weeks to try and reduce the spread of this disease as it cannot survive for an extended period of time under dry conditions. If the disease is present then we have caught it quickly to ensure there is minimal chance of transmission between birds at the feeders. We still have net bags filled with nuts for the birds which the red squirrels are tucking into so there is still plenty to see here at the Loch of the Lowes.
More information on the trichomonad parasite can be found on the RSPB website at
http://www.rspb.org.uk/advice/helpingbirds/health/sickbirds/greenfinches.asp