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Summary for 29th September Residents: A42s, I4s, I27s, I16s From late on the afternoon of the 28th we continued to hear A5 and I15 calls distant in Johnstone Strait until 2am, when they fell silent. Probably the orcas left the Strait and went through Weynton Passage. From 4am to 7.30am we enjoyed the company of a lovely humpback singing sporadically in Blackfish Sound. It wasn’t until early afternoon, at 1:50pm that we heard the orcas again. The A5s sounded first, distant in Blackfish Sound, with the I15s joining the chorus an hour later off Cracroft Point. Megan was out in Blackfish Sound at the time of the A5 calls, and later ID’d I51 (from the I16s), A42 and A114 of the A42s for us. We found them on Cracroft Point camera at 4pm in Johnstone Strait, and we assumed these to be the I15s as we saw a sprouting male in the distance - the A42s do not yet have such a male. They appeared to be milling around the entrance to Blackney Pass for some time, but at 4:28pm we heard A5 calls join the I15s, and they all began to head into Blackney Pass. Their vocalizations were infrequent, but we heard some clear I15 trills as they passed north. By 5:24pm they had cleared our view. We believe we had the A42s, I4s, I27s and I16s in this passing. We didn’t hear anything further from these groups as they travelled through Blackfish Sound. At 8pm, we heard some fantastic humpback vocalizations once again on our local hydrophone, which continued on and off until the early hours of the 30th. Summary for 30th September Residents: A42s, I4s Biggs: T101s, T002Cs, T090s At 6am on September 30th, we heard yet more beautiful humpback calls: a prelude to the last September sunrise of the year. We enjoyed their song for an hour in Blackfish Sound, as the sky opened up from pink to orange to a deep, brilliant blue. Just after 10am, we heard some A calls in Blackfish Sound which persisted until 11am. They were very distant and there was a lot of boat noise - so we didn’t acoustically confirm who they were, but we assumed A42s as we later received a report that they had been seen around this time off Lizard Point and also the Numas Islands. We had a very busy afternoon tending to our hydrophones on Flower Island and Parson Island, and the camera on Sea Lion Rock. We also received a report from Jared that the T101s were seen off Alert Bay in the morning, the T002Cs and T90s off the Pearse Islands, and the I4s off White Cliffs. The day concluded as it had begun: a humpback singing briefly at 8pm in Blackney Pass. Summary for 1 October Residents: A34s, A42s Bigg’s: T059As October arrived with another glorious sunrise. We were enjoying our morning coffee watching the pink and orange hues fade to blue - when at 7.50am Quin spotted very distant blows glistening in the dawn light, way over by Harbledown Island. No calls. We scrambled to the lab and immediately had our suspicions: Bigg’s! Although they were on the far side of Blackney Pass, we could tell that their dorsals and movements were distinctly different to the residents. Sure enough, the group of five distant fins made their way right into Parson’s Bay and began thrashing and splashing around - they were harassing a large group of Pacific White-sided dolphins. We witnessed this for over an hour, watching the dolphins make a hurried and determined exit north out of Blackney Pass. We can only imagine there was at least one unlucky member who had not escaped the Biggs’ attack... Jared Towers arrived on the scene and confirmed that these were the T059As. We didn’t see them for a while and thought that they must have done a deep dive and headed out of our view; when at 10am we saw them surface close to Sea Lion Rock, headed north our way! Another long dive and we feared they would head round Burnt Point out of view, when they surfaced directly in front of us about 100m from the deck. With breath held and shutters clicking, we saw them surface a few more times before they finally cleared our view to the north. We noted the wary sea lions huddling close to shore as the Bigg’s orcas passed; but they were perhaps fully satiated from their earlier meal, and paid the sea lions little attention. Although the biting cold has certainly begun to settle in, the rest of the day was basked in sunshine. Humpbacks, including Guardian, continued to be active in Blackney Pass, and the ever-patrolling sea lions rolled by the deck in their droves. Just as we were starting to prepare dinner, we received a report at 4:21pm from AJ at Farewell Harbour that there were vocal orcas in Blackfish Sound, heading towards Blackney Pass. Minutes later, we heard our first calls. A5s. We found them on our remote Sea Lion Rock camera and anticipated that it would be a good while before they came into our lab view. The calls stopped. Suddenly, way ahead of our estimate of 4:45pm, Suzie caught sight of a single male dorsal streaking quickly through Blackney Pass, heading south. Perhaps a little complacently, we thought this must be A66 of the A42s, which would make sense of the A5 calls we were hearing. He was mid-far channel and around Whitebeach Passage when we saw some more fins come in. One was a sprouting male… “Hmm. There’s no sprouting male in the A42s.” we pondered amongst ourselves. “Also, the large male that entered first does not look like A66.” We were scratching our heads, trying to make sense of it all, when we were gifted a little call of clarity at 5pm - an excited A1 call on our local hydrophone. Our hearts were racing... new whales! This was followed by more distinctive A1 calls, and we were desperately listening out for acoustic clues to help identify this new group. Helena was listening in and confirmed what we were hearing - the A34s! Sure enough, we compared the dorsal and saddle of the male we were seeing to that of A55, and it was a perfect match. The sprouter was A80. We also heard their signature “A12 special” call. They cleared our view at 5.20pm, and we headed inside to the lab. We identified A34 and A80 very easily, and were sure it was them, but one thing didn’t add up: We only saw seven whales. The A67s plus A34,A55,A96 and A80 was a reasonable assumption. Where were the other four, the A62s, from the A34 matriline? And why had we heard A5 calls but seen no A5s? Just as we were pondering that question, the answer appeared in physical form: All seven members of the A42s and the remaining four (the A62s) from the A34s popped up right in front of us, 50m from the lab deck! They were following their kin, zooming through Blackney to the south. They hugged the Hanson Island shore as they continued into Johnstone Strait, clearing our view by 5.35pm. Close passings from both Biggs and residents in one day - what an absolute treat. Exhilarated and emotionally exhausted, we put our heads together to identify exactly who had travelled with whom, making sure our IDs matched with what we had seen. We continued to track them on our remote Cracroft Point camera and hydrophone until the light faded, and we last heard them in Johnstone Strait at 8.22pm. A lone humpback brought the day to a close with some lovely vocalizations in Blackfish Sound, and at 9.30pm the waters fell silent once more. Another glorious reminder that there’s no room for complacency or assumptions here - these beautiful, wild whales continue to surprise and energise us as we wait patiently for them on this little rock. Happy October everyone!
OrcaLab 02 Oct 2019 16:16:02 PST |
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