I don't know why, but there has been no activity at the quarry since I posted the nest building on April 15. I have gone back two times and there were no swallows, except Turkey Vultures flying overhead. I do not know who, what, or why, caused this to happen, but this is sad. There was lots of activity, now, suddenly, nothing. Klaus
Post by birderbert on Apr 22, 2020 13:53:33 GMT -8
I think you witnessed the arrival of the Cliff Swallows where they were checking out their nesting sites. According to my limited historical data they will be adding to or building new nests up until the middle of May and lay eggs from mid May to the end of May. The youngsters fledge from mid June to the end of June. I suspect they will be back building nests over the next few weeks?
OLYMPUS MICRO 4/3 SYSTEM, Oly 300/4 Pro and 40-150/2.8 Pro + MC-14 or MC-20 teleconverters
I think that sometimes the swallows take off together and can fly quite a distance in search of mud. So if you happen to be there when they are on a mud-gathering expedition, the nests will appear to be abandoned. I have witnessed this at the Mission Bridge site where they also nest. I haven't been down there this year to see if they are back there yet.
I've also noticed with the insectivores that if the weather gets a bit wet/cold or windy they will move briefly to find food. Usually only happens early in the season. Hank, great mud gathering shots!!
Gord Fraser Valley Birding Administrator eBird Regional Editor (Fraser Valley)
Post by nickinthegarden on May 19, 2020 12:18:54 GMT -8
I saw the Peregrine Falcon sitting on a rock ledge at the quarry site, I suspect it is sitting on eggs as it did not move while I watched other than to watch me. More of a concern was a sign on the road in stating there was going to be grinding and paving being done on the road. Are not Peregrine Falcon nesting sites protected under the Wildlife Act and would not such an activity around an active nest constitute a violation of the Act? What about the Cliff Swallows they nest right above that road are they not protected?
While I suspect that you are right about there being a nest, I don't think the bird you pictured is incubating the eggs because they do that with their breast (looking somewhat odd as they lie on their belly).